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1 | 1 | # encoding: utf-8 |
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2 | 2 | """ |
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3 | 3 | Global exception classes for IPython.core. |
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4 | 4 | |
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5 | 5 | Authors: |
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6 | 6 | |
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7 | 7 | * Brian Granger |
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8 | 8 | * Fernando Perez |
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9 | 9 | * Min Ragan-Kelley |
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10 | 10 | |
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11 | 11 | Notes |
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12 | 12 | ----- |
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13 | 13 | """ |
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14 | 14 | |
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15 | 15 | #----------------------------------------------------------------------------- |
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16 | 16 | # Copyright (C) 2008 The IPython Development Team |
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17 | 17 | # |
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18 | 18 | # Distributed under the terms of the BSD License. The full license is in |
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19 | 19 | # the file COPYING, distributed as part of this software. |
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20 | 20 | #----------------------------------------------------------------------------- |
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21 | 21 | |
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22 | 22 | #----------------------------------------------------------------------------- |
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23 | 23 | # Imports |
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24 | 24 | #----------------------------------------------------------------------------- |
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25 | 25 | |
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26 | 26 | #----------------------------------------------------------------------------- |
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27 | 27 | # Exception classes |
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28 | 28 | #----------------------------------------------------------------------------- |
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29 | 29 | |
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30 | 30 | class IPythonCoreError(Exception): |
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31 | 31 | pass |
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32 | 32 | |
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33 | 33 | |
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34 | 34 | class TryNext(IPythonCoreError): |
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35 | 35 | """Try next hook exception. |
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36 | 36 | |
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37 | 37 | Raise this in your hook function to indicate that the next hook handler |
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38 | 38 | should be used to handle the operation. |
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39 | 39 | """ |
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40 | 40 | |
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41 | 41 | class UsageError(IPythonCoreError): |
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42 | 42 | """Error in magic function arguments, etc. |
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43 | 43 | |
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44 | 44 | Something that probably won't warrant a full traceback, but should |
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45 | 45 | nevertheless interrupt a macro / batch file. |
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46 | 46 | """ |
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47 | 47 | |
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48 | 48 | class StdinNotImplementedError(IPythonCoreError, NotImplementedError): |
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49 | 49 | """raw_input was requested in a context where it is not supported |
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50 | 50 | |
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51 | 51 | For use in IPython kernels, where only some frontends may support |
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52 | 52 | stdin requests. |
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53 | 53 | """ |
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54 | ||
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55 | class InputRejected(Exception): | |
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56 | """Input rejected by ast transformer. | |
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57 | ||
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58 | Raise this in your NodeTransformer to indicate that InteractiveShell should | |
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59 | not execute the supplied input. | |
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60 | """ |
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Tests for the key interactiveshell module. |
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3 | 3 | |
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4 | 4 | Historically the main classes in interactiveshell have been under-tested. This |
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5 | 5 | module should grow as many single-method tests as possible to trap many of the |
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6 | 6 | recurring bugs we seem to encounter with high-level interaction. |
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7 | 7 | """ |
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8 | 8 | |
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9 | 9 | # Copyright (c) IPython Development Team. |
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10 | 10 | # Distributed under the terms of the Modified BSD License. |
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11 | 11 | |
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12 | 12 | import ast |
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13 | 13 | import os |
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14 | 14 | import signal |
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15 | 15 | import shutil |
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16 | 16 | import sys |
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17 | 17 | import tempfile |
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18 | 18 | import unittest |
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19 | 19 | try: |
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20 | 20 | from unittest import mock |
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21 | 21 | except ImportError: |
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22 | 22 | import mock |
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23 | 23 | from os.path import join |
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24 | 24 | |
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25 | 25 | import nose.tools as nt |
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26 | 26 | |
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27 | from IPython.core.error import InputRejected | |
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27 | 28 | from IPython.core.inputtransformer import InputTransformer |
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28 | from IPython.lib.security import InputRejected | |
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29 | 29 | from IPython.testing.decorators import ( |
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30 | 30 | skipif, skip_win32, onlyif_unicode_paths, onlyif_cmds_exist, |
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31 | 31 | ) |
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32 | 32 | from IPython.testing import tools as tt |
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33 | 33 | from IPython.utils import io |
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34 | 34 | from IPython.utils.process import find_cmd |
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35 | 35 | from IPython.utils import py3compat |
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36 | 36 | from IPython.utils.py3compat import unicode_type, PY3 |
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37 | 37 | |
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38 | 38 | if PY3: |
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39 | 39 | from io import StringIO |
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40 | 40 | else: |
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41 | 41 | from StringIO import StringIO |
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42 | 42 | |
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43 | 43 | #----------------------------------------------------------------------------- |
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44 | 44 | # Globals |
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45 | 45 | #----------------------------------------------------------------------------- |
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46 | 46 | # This is used by every single test, no point repeating it ad nauseam |
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47 | 47 | ip = get_ipython() |
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48 | 48 | |
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49 | 49 | #----------------------------------------------------------------------------- |
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50 | 50 | # Tests |
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51 | 51 | #----------------------------------------------------------------------------- |
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52 | 52 | |
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53 | 53 | class InteractiveShellTestCase(unittest.TestCase): |
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54 | 54 | def test_naked_string_cells(self): |
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55 | 55 | """Test that cells with only naked strings are fully executed""" |
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56 | 56 | # First, single-line inputs |
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57 | 57 | ip.run_cell('"a"\n') |
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58 | 58 | self.assertEqual(ip.user_ns['_'], 'a') |
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59 | 59 | # And also multi-line cells |
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60 | 60 | ip.run_cell('"""a\nb"""\n') |
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61 | 61 | self.assertEqual(ip.user_ns['_'], 'a\nb') |
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62 | 62 | |
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63 | 63 | def test_run_empty_cell(self): |
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64 | 64 | """Just make sure we don't get a horrible error with a blank |
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65 | 65 | cell of input. Yes, I did overlook that.""" |
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66 | 66 | old_xc = ip.execution_count |
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67 | 67 | ip.run_cell('') |
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68 | 68 | self.assertEqual(ip.execution_count, old_xc) |
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69 | 69 | |
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70 | 70 | def test_run_cell_multiline(self): |
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71 | 71 | """Multi-block, multi-line cells must execute correctly. |
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72 | 72 | """ |
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73 | 73 | src = '\n'.join(["x=1", |
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74 | 74 | "y=2", |
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75 | 75 | "if 1:", |
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76 | 76 | " x += 1", |
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77 | 77 | " y += 1",]) |
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78 | 78 | ip.run_cell(src) |
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79 | 79 | self.assertEqual(ip.user_ns['x'], 2) |
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80 | 80 | self.assertEqual(ip.user_ns['y'], 3) |
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81 | 81 | |
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82 | 82 | def test_multiline_string_cells(self): |
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83 | 83 | "Code sprinkled with multiline strings should execute (GH-306)" |
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84 | 84 | ip.run_cell('tmp=0') |
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85 | 85 | self.assertEqual(ip.user_ns['tmp'], 0) |
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86 | 86 | ip.run_cell('tmp=1;"""a\nb"""\n') |
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87 | 87 | self.assertEqual(ip.user_ns['tmp'], 1) |
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88 | 88 | |
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89 | 89 | def test_dont_cache_with_semicolon(self): |
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90 | 90 | "Ending a line with semicolon should not cache the returned object (GH-307)" |
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91 | 91 | oldlen = len(ip.user_ns['Out']) |
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92 | 92 | for cell in ['1;', '1;1;']: |
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93 | 93 | ip.run_cell(cell, store_history=True) |
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94 | 94 | newlen = len(ip.user_ns['Out']) |
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95 | 95 | self.assertEqual(oldlen, newlen) |
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96 | 96 | i = 0 |
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97 | 97 | #also test the default caching behavior |
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98 | 98 | for cell in ['1', '1;1']: |
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99 | 99 | ip.run_cell(cell, store_history=True) |
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100 | 100 | newlen = len(ip.user_ns['Out']) |
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101 | 101 | i += 1 |
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102 | 102 | self.assertEqual(oldlen+i, newlen) |
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103 | 103 | |
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104 | 104 | def test_In_variable(self): |
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105 | 105 | "Verify that In variable grows with user input (GH-284)" |
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106 | 106 | oldlen = len(ip.user_ns['In']) |
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107 | 107 | ip.run_cell('1;', store_history=True) |
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108 | 108 | newlen = len(ip.user_ns['In']) |
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109 | 109 | self.assertEqual(oldlen+1, newlen) |
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110 | 110 | self.assertEqual(ip.user_ns['In'][-1],'1;') |
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111 | 111 | |
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112 | 112 | def test_magic_names_in_string(self): |
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113 | 113 | ip.run_cell('a = """\n%exit\n"""') |
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114 | 114 | self.assertEqual(ip.user_ns['a'], '\n%exit\n') |
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115 | 115 | |
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116 | 116 | def test_trailing_newline(self): |
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117 | 117 | """test that running !(command) does not raise a SyntaxError""" |
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118 | 118 | ip.run_cell('!(true)\n', False) |
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119 | 119 | ip.run_cell('!(true)\n\n\n', False) |
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120 | 120 | |
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121 | 121 | def test_gh_597(self): |
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122 | 122 | """Pretty-printing lists of objects with non-ascii reprs may cause |
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123 | 123 | problems.""" |
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124 | 124 | class Spam(object): |
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125 | 125 | def __repr__(self): |
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126 | 126 | return "\xe9"*50 |
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127 | 127 | import IPython.core.formatters |
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128 | 128 | f = IPython.core.formatters.PlainTextFormatter() |
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129 | 129 | f([Spam(),Spam()]) |
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130 | 130 | |
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131 | 131 | |
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132 | 132 | def test_future_flags(self): |
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133 | 133 | """Check that future flags are used for parsing code (gh-777)""" |
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134 | 134 | ip.run_cell('from __future__ import print_function') |
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135 | 135 | try: |
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136 | 136 | ip.run_cell('prfunc_return_val = print(1,2, sep=" ")') |
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137 | 137 | assert 'prfunc_return_val' in ip.user_ns |
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138 | 138 | finally: |
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139 | 139 | # Reset compiler flags so we don't mess up other tests. |
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140 | 140 | ip.compile.reset_compiler_flags() |
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141 | 141 | |
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142 | 142 | def test_future_unicode(self): |
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143 | 143 | """Check that unicode_literals is imported from __future__ (gh #786)""" |
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144 | 144 | try: |
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145 | 145 | ip.run_cell(u'byte_str = "a"') |
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146 | 146 | assert isinstance(ip.user_ns['byte_str'], str) # string literals are byte strings by default |
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147 | 147 | ip.run_cell('from __future__ import unicode_literals') |
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148 | 148 | ip.run_cell(u'unicode_str = "a"') |
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149 | 149 | assert isinstance(ip.user_ns['unicode_str'], unicode_type) # strings literals are now unicode |
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150 | 150 | finally: |
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151 | 151 | # Reset compiler flags so we don't mess up other tests. |
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152 | 152 | ip.compile.reset_compiler_flags() |
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153 | 153 | |
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154 | 154 | def test_can_pickle(self): |
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155 | 155 | "Can we pickle objects defined interactively (GH-29)" |
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156 | 156 | ip = get_ipython() |
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157 | 157 | ip.reset() |
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158 | 158 | ip.run_cell(("class Mylist(list):\n" |
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159 | 159 | " def __init__(self,x=[]):\n" |
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160 | 160 | " list.__init__(self,x)")) |
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161 | 161 | ip.run_cell("w=Mylist([1,2,3])") |
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162 | 162 | |
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163 | 163 | from pickle import dumps |
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164 | 164 | |
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165 | 165 | # We need to swap in our main module - this is only necessary |
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166 | 166 | # inside the test framework, because IPython puts the interactive module |
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167 | 167 | # in place (but the test framework undoes this). |
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168 | 168 | _main = sys.modules['__main__'] |
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169 | 169 | sys.modules['__main__'] = ip.user_module |
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170 | 170 | try: |
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171 | 171 | res = dumps(ip.user_ns["w"]) |
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172 | 172 | finally: |
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173 | 173 | sys.modules['__main__'] = _main |
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174 | 174 | self.assertTrue(isinstance(res, bytes)) |
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175 | 175 | |
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176 | 176 | def test_global_ns(self): |
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177 | 177 | "Code in functions must be able to access variables outside them." |
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178 | 178 | ip = get_ipython() |
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179 | 179 | ip.run_cell("a = 10") |
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180 | 180 | ip.run_cell(("def f(x):\n" |
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181 | 181 | " return x + a")) |
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182 | 182 | ip.run_cell("b = f(12)") |
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183 | 183 | self.assertEqual(ip.user_ns["b"], 22) |
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184 | 184 | |
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185 | 185 | def test_bad_custom_tb(self): |
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186 | 186 | """Check that InteractiveShell is protected from bad custom exception handlers""" |
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187 | 187 | from IPython.utils import io |
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188 | 188 | save_stderr = io.stderr |
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189 | 189 | try: |
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190 | 190 | # capture stderr |
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191 | 191 | io.stderr = StringIO() |
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192 | 192 | ip.set_custom_exc((IOError,), lambda etype,value,tb: 1/0) |
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193 | 193 | self.assertEqual(ip.custom_exceptions, (IOError,)) |
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194 | 194 | ip.run_cell(u'raise IOError("foo")') |
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195 | 195 | self.assertEqual(ip.custom_exceptions, ()) |
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196 | 196 | self.assertTrue("Custom TB Handler failed" in io.stderr.getvalue()) |
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197 | 197 | finally: |
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198 | 198 | io.stderr = save_stderr |
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199 | 199 | |
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200 | 200 | def test_bad_custom_tb_return(self): |
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201 | 201 | """Check that InteractiveShell is protected from bad return types in custom exception handlers""" |
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202 | 202 | from IPython.utils import io |
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203 | 203 | save_stderr = io.stderr |
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204 | 204 | try: |
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205 | 205 | # capture stderr |
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206 | 206 | io.stderr = StringIO() |
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207 | 207 | ip.set_custom_exc((NameError,),lambda etype,value,tb, tb_offset=None: 1) |
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208 | 208 | self.assertEqual(ip.custom_exceptions, (NameError,)) |
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209 | 209 | ip.run_cell(u'a=abracadabra') |
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210 | 210 | self.assertEqual(ip.custom_exceptions, ()) |
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211 | 211 | self.assertTrue("Custom TB Handler failed" in io.stderr.getvalue()) |
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212 | 212 | finally: |
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213 | 213 | io.stderr = save_stderr |
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214 | 214 | |
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215 | 215 | def test_drop_by_id(self): |
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216 | 216 | myvars = {"a":object(), "b":object(), "c": object()} |
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217 | 217 | ip.push(myvars, interactive=False) |
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218 | 218 | for name in myvars: |
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219 | 219 | assert name in ip.user_ns, name |
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220 | 220 | assert name in ip.user_ns_hidden, name |
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221 | 221 | ip.user_ns['b'] = 12 |
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222 | 222 | ip.drop_by_id(myvars) |
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223 | 223 | for name in ["a", "c"]: |
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224 | 224 | assert name not in ip.user_ns, name |
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225 | 225 | assert name not in ip.user_ns_hidden, name |
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226 | 226 | assert ip.user_ns['b'] == 12 |
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227 | 227 | ip.reset() |
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228 | 228 | |
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229 | 229 | def test_var_expand(self): |
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230 | 230 | ip.user_ns['f'] = u'Ca\xf1o' |
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231 | 231 | self.assertEqual(ip.var_expand(u'echo $f'), u'echo Ca\xf1o') |
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232 | 232 | self.assertEqual(ip.var_expand(u'echo {f}'), u'echo Ca\xf1o') |
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233 | 233 | self.assertEqual(ip.var_expand(u'echo {f[:-1]}'), u'echo Ca\xf1') |
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234 | 234 | self.assertEqual(ip.var_expand(u'echo {1*2}'), u'echo 2') |
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235 | 235 | |
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236 | 236 | ip.user_ns['f'] = b'Ca\xc3\xb1o' |
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237 | 237 | # This should not raise any exception: |
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238 | 238 | ip.var_expand(u'echo $f') |
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239 | 239 | |
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240 | 240 | def test_var_expand_local(self): |
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241 | 241 | """Test local variable expansion in !system and %magic calls""" |
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242 | 242 | # !system |
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243 | 243 | ip.run_cell('def test():\n' |
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244 | 244 | ' lvar = "ttt"\n' |
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245 | 245 | ' ret = !echo {lvar}\n' |
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246 | 246 | ' return ret[0]\n') |
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247 | 247 | res = ip.user_ns['test']() |
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248 | 248 | nt.assert_in('ttt', res) |
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249 | 249 | |
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250 | 250 | # %magic |
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251 | 251 | ip.run_cell('def makemacro():\n' |
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252 | 252 | ' macroname = "macro_var_expand_locals"\n' |
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253 | 253 | ' %macro {macroname} codestr\n') |
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254 | 254 | ip.user_ns['codestr'] = "str(12)" |
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255 | 255 | ip.run_cell('makemacro()') |
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256 | 256 | nt.assert_in('macro_var_expand_locals', ip.user_ns) |
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257 | 257 | |
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258 | 258 | def test_var_expand_self(self): |
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259 | 259 | """Test variable expansion with the name 'self', which was failing. |
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260 | 260 | |
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261 | 261 | See https://github.com/ipython/ipython/issues/1878#issuecomment-7698218 |
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262 | 262 | """ |
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263 | 263 | ip.run_cell('class cTest:\n' |
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264 | 264 | ' classvar="see me"\n' |
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265 | 265 | ' def test(self):\n' |
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266 | 266 | ' res = !echo Variable: {self.classvar}\n' |
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267 | 267 | ' return res[0]\n') |
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268 | 268 | nt.assert_in('see me', ip.user_ns['cTest']().test()) |
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269 | 269 | |
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270 | 270 | def test_bad_var_expand(self): |
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271 | 271 | """var_expand on invalid formats shouldn't raise""" |
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272 | 272 | # SyntaxError |
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273 | 273 | self.assertEqual(ip.var_expand(u"{'a':5}"), u"{'a':5}") |
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274 | 274 | # NameError |
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275 | 275 | self.assertEqual(ip.var_expand(u"{asdf}"), u"{asdf}") |
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276 | 276 | # ZeroDivisionError |
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277 | 277 | self.assertEqual(ip.var_expand(u"{1/0}"), u"{1/0}") |
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278 | 278 | |
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279 | 279 | def test_silent_postexec(self): |
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280 | 280 | """run_cell(silent=True) doesn't invoke pre/post_run_cell callbacks""" |
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281 | 281 | pre_explicit = mock.Mock() |
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282 | 282 | pre_always = mock.Mock() |
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283 | 283 | post_explicit = mock.Mock() |
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284 | 284 | post_always = mock.Mock() |
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285 | 285 | |
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286 | 286 | ip.events.register('pre_run_cell', pre_explicit) |
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287 | 287 | ip.events.register('pre_execute', pre_always) |
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288 | 288 | ip.events.register('post_run_cell', post_explicit) |
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289 | 289 | ip.events.register('post_execute', post_always) |
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290 | 290 | |
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291 | 291 | try: |
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292 | 292 | ip.run_cell("1", silent=True) |
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293 | 293 | assert pre_always.called |
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294 | 294 | assert not pre_explicit.called |
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295 | 295 | assert post_always.called |
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296 | 296 | assert not post_explicit.called |
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297 | 297 | # double-check that non-silent exec did what we expected |
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298 | 298 | # silent to avoid |
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299 | 299 | ip.run_cell("1") |
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300 | 300 | assert pre_explicit.called |
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301 | 301 | assert post_explicit.called |
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302 | 302 | finally: |
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303 | 303 | # remove post-exec |
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304 | 304 | ip.events.reset_all() |
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305 | 305 | |
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306 | 306 | def test_silent_noadvance(self): |
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307 | 307 | """run_cell(silent=True) doesn't advance execution_count""" |
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308 | 308 | ec = ip.execution_count |
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309 | 309 | # silent should force store_history=False |
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310 | 310 | ip.run_cell("1", store_history=True, silent=True) |
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311 | 311 | |
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312 | 312 | self.assertEqual(ec, ip.execution_count) |
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313 | 313 | # double-check that non-silent exec did what we expected |
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314 | 314 | # silent to avoid |
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315 | 315 | ip.run_cell("1", store_history=True) |
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316 | 316 | self.assertEqual(ec+1, ip.execution_count) |
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317 | 317 | |
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318 | 318 | def test_silent_nodisplayhook(self): |
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319 | 319 | """run_cell(silent=True) doesn't trigger displayhook""" |
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320 | 320 | d = dict(called=False) |
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321 | 321 | |
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322 | 322 | trap = ip.display_trap |
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323 | 323 | save_hook = trap.hook |
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324 | 324 | |
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325 | 325 | def failing_hook(*args, **kwargs): |
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326 | 326 | d['called'] = True |
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327 | 327 | |
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328 | 328 | try: |
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329 | 329 | trap.hook = failing_hook |
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330 | 330 | ip.run_cell("1", silent=True) |
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331 | 331 | self.assertFalse(d['called']) |
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332 | 332 | # double-check that non-silent exec did what we expected |
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333 | 333 | # silent to avoid |
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334 | 334 | ip.run_cell("1") |
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335 | 335 | self.assertTrue(d['called']) |
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336 | 336 | finally: |
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337 | 337 | trap.hook = save_hook |
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338 | 338 | |
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339 | 339 | @skipif(sys.version_info[0] >= 3, "softspace removed in py3") |
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340 | 340 | def test_print_softspace(self): |
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341 | 341 | """Verify that softspace is handled correctly when executing multiple |
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342 | 342 | statements. |
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343 | 343 | |
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344 | 344 | In [1]: print 1; print 2 |
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345 | 345 | 1 |
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346 | 346 | 2 |
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347 | 347 | |
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348 | 348 | In [2]: print 1,; print 2 |
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349 | 349 | 1 2 |
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350 | 350 | """ |
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351 | 351 | |
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352 | 352 | def test_ofind_line_magic(self): |
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353 | 353 | from IPython.core.magic import register_line_magic |
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354 | 354 | |
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355 | 355 | @register_line_magic |
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356 | 356 | def lmagic(line): |
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357 | 357 | "A line magic" |
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358 | 358 | |
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359 | 359 | # Get info on line magic |
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360 | 360 | lfind = ip._ofind('lmagic') |
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361 | 361 | info = dict(found=True, isalias=False, ismagic=True, |
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362 | 362 | namespace = 'IPython internal', obj= lmagic.__wrapped__, |
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363 | 363 | parent = None) |
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364 | 364 | nt.assert_equal(lfind, info) |
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365 | 365 | |
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366 | 366 | def test_ofind_cell_magic(self): |
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367 | 367 | from IPython.core.magic import register_cell_magic |
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368 | 368 | |
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369 | 369 | @register_cell_magic |
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370 | 370 | def cmagic(line, cell): |
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371 | 371 | "A cell magic" |
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372 | 372 | |
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373 | 373 | # Get info on cell magic |
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374 | 374 | find = ip._ofind('cmagic') |
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375 | 375 | info = dict(found=True, isalias=False, ismagic=True, |
|
376 | 376 | namespace = 'IPython internal', obj= cmagic.__wrapped__, |
|
377 | 377 | parent = None) |
|
378 | 378 | nt.assert_equal(find, info) |
|
379 | 379 | |
|
380 | 380 | def test_ofind_property_with_error(self): |
|
381 | 381 | class A(object): |
|
382 | 382 | @property |
|
383 | 383 | def foo(self): |
|
384 | 384 | raise NotImplementedError() |
|
385 | 385 | a = A() |
|
386 | 386 | |
|
387 | 387 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
388 | 388 | info = dict(found=True, isalias=False, ismagic=False, |
|
389 | 389 | namespace='locals', obj=A.foo, parent=a) |
|
390 | 390 | nt.assert_equal(found, info) |
|
391 | 391 | |
|
392 | 392 | def test_ofind_multiple_attribute_lookups(self): |
|
393 | 393 | class A(object): |
|
394 | 394 | @property |
|
395 | 395 | def foo(self): |
|
396 | 396 | raise NotImplementedError() |
|
397 | 397 | |
|
398 | 398 | a = A() |
|
399 | 399 | a.a = A() |
|
400 | 400 | a.a.a = A() |
|
401 | 401 | |
|
402 | 402 | found = ip._ofind('a.a.a.foo', [('locals', locals())]) |
|
403 | 403 | info = dict(found=True, isalias=False, ismagic=False, |
|
404 | 404 | namespace='locals', obj=A.foo, parent=a.a.a) |
|
405 | 405 | nt.assert_equal(found, info) |
|
406 | 406 | |
|
407 | 407 | def test_ofind_slotted_attributes(self): |
|
408 | 408 | class A(object): |
|
409 | 409 | __slots__ = ['foo'] |
|
410 | 410 | def __init__(self): |
|
411 | 411 | self.foo = 'bar' |
|
412 | 412 | |
|
413 | 413 | a = A() |
|
414 | 414 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
415 | 415 | info = dict(found=True, isalias=False, ismagic=False, |
|
416 | 416 | namespace='locals', obj=a.foo, parent=a) |
|
417 | 417 | nt.assert_equal(found, info) |
|
418 | 418 | |
|
419 | 419 | found = ip._ofind('a.bar', [('locals', locals())]) |
|
420 | 420 | info = dict(found=False, isalias=False, ismagic=False, |
|
421 | 421 | namespace=None, obj=None, parent=a) |
|
422 | 422 | nt.assert_equal(found, info) |
|
423 | 423 | |
|
424 | 424 | def test_ofind_prefers_property_to_instance_level_attribute(self): |
|
425 | 425 | class A(object): |
|
426 | 426 | @property |
|
427 | 427 | def foo(self): |
|
428 | 428 | return 'bar' |
|
429 | 429 | a = A() |
|
430 | 430 | a.__dict__['foo'] = 'baz' |
|
431 | 431 | nt.assert_equal(a.foo, 'bar') |
|
432 | 432 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
433 | 433 | nt.assert_is(found['obj'], A.foo) |
|
434 | 434 | |
|
435 | 435 | def test_custom_exception(self): |
|
436 | 436 | called = [] |
|
437 | 437 | def my_handler(shell, etype, value, tb, tb_offset=None): |
|
438 | 438 | called.append(etype) |
|
439 | 439 | shell.showtraceback((etype, value, tb), tb_offset=tb_offset) |
|
440 | 440 | |
|
441 | 441 | ip.set_custom_exc((ValueError,), my_handler) |
|
442 | 442 | try: |
|
443 | 443 | ip.run_cell("raise ValueError('test')") |
|
444 | 444 | # Check that this was called, and only once. |
|
445 | 445 | self.assertEqual(called, [ValueError]) |
|
446 | 446 | finally: |
|
447 | 447 | # Reset the custom exception hook |
|
448 | 448 | ip.set_custom_exc((), None) |
|
449 | 449 | |
|
450 | 450 | @skipif(sys.version_info[0] >= 3, "no differences with __future__ in py3") |
|
451 | 451 | def test_future_environment(self): |
|
452 | 452 | "Can we run code with & without the shell's __future__ imports?" |
|
453 | 453 | ip.run_cell("from __future__ import division") |
|
454 | 454 | ip.run_cell("a = 1/2", shell_futures=True) |
|
455 | 455 | self.assertEqual(ip.user_ns['a'], 0.5) |
|
456 | 456 | ip.run_cell("b = 1/2", shell_futures=False) |
|
457 | 457 | self.assertEqual(ip.user_ns['b'], 0) |
|
458 | 458 | |
|
459 | 459 | ip.compile.reset_compiler_flags() |
|
460 | 460 | # This shouldn't leak to the shell's compiler |
|
461 | 461 | ip.run_cell("from __future__ import division \nc=1/2", shell_futures=False) |
|
462 | 462 | self.assertEqual(ip.user_ns['c'], 0.5) |
|
463 | 463 | ip.run_cell("d = 1/2", shell_futures=True) |
|
464 | 464 | self.assertEqual(ip.user_ns['d'], 0) |
|
465 | 465 | |
|
466 | 466 | def test_mktempfile(self): |
|
467 | 467 | filename = ip.mktempfile() |
|
468 | 468 | # Check that we can open the file again on Windows |
|
469 | 469 | with open(filename, 'w') as f: |
|
470 | 470 | f.write('abc') |
|
471 | 471 | |
|
472 | 472 | filename = ip.mktempfile(data='blah') |
|
473 | 473 | with open(filename, 'r') as f: |
|
474 | 474 | self.assertEqual(f.read(), 'blah') |
|
475 | 475 | |
|
476 | 476 | def test_new_main_mod(self): |
|
477 | 477 | # Smoketest to check that this accepts a unicode module name |
|
478 | 478 | name = u'jiefmw' |
|
479 | 479 | mod = ip.new_main_mod(u'%s.py' % name, name) |
|
480 | 480 | self.assertEqual(mod.__name__, name) |
|
481 | 481 | |
|
482 | 482 | class TestSafeExecfileNonAsciiPath(unittest.TestCase): |
|
483 | 483 | |
|
484 | 484 | @onlyif_unicode_paths |
|
485 | 485 | def setUp(self): |
|
486 | 486 | self.BASETESTDIR = tempfile.mkdtemp() |
|
487 | 487 | self.TESTDIR = join(self.BASETESTDIR, u"Γ₯Àâ") |
|
488 | 488 | os.mkdir(self.TESTDIR) |
|
489 | 489 | with open(join(self.TESTDIR, u"Γ₯Àâtestscript.py"), "w") as sfile: |
|
490 | 490 | sfile.write("pass\n") |
|
491 | 491 | self.oldpath = py3compat.getcwd() |
|
492 | 492 | os.chdir(self.TESTDIR) |
|
493 | 493 | self.fname = u"Γ₯Àâtestscript.py" |
|
494 | 494 | |
|
495 | 495 | def tearDown(self): |
|
496 | 496 | os.chdir(self.oldpath) |
|
497 | 497 | shutil.rmtree(self.BASETESTDIR) |
|
498 | 498 | |
|
499 | 499 | @onlyif_unicode_paths |
|
500 | 500 | def test_1(self): |
|
501 | 501 | """Test safe_execfile with non-ascii path |
|
502 | 502 | """ |
|
503 | 503 | ip.safe_execfile(self.fname, {}, raise_exceptions=True) |
|
504 | 504 | |
|
505 | 505 | class ExitCodeChecks(tt.TempFileMixin): |
|
506 | 506 | def test_exit_code_ok(self): |
|
507 | 507 | self.system('exit 0') |
|
508 | 508 | self.assertEqual(ip.user_ns['_exit_code'], 0) |
|
509 | 509 | |
|
510 | 510 | def test_exit_code_error(self): |
|
511 | 511 | self.system('exit 1') |
|
512 | 512 | self.assertEqual(ip.user_ns['_exit_code'], 1) |
|
513 | 513 | |
|
514 | 514 | @skipif(not hasattr(signal, 'SIGALRM')) |
|
515 | 515 | def test_exit_code_signal(self): |
|
516 | 516 | self.mktmp("import signal, time\n" |
|
517 | 517 | "signal.setitimer(signal.ITIMER_REAL, 0.1)\n" |
|
518 | 518 | "time.sleep(1)\n") |
|
519 | 519 | self.system("%s %s" % (sys.executable, self.fname)) |
|
520 | 520 | self.assertEqual(ip.user_ns['_exit_code'], -signal.SIGALRM) |
|
521 | 521 | |
|
522 | 522 | @onlyif_cmds_exist("csh") |
|
523 | 523 | def test_exit_code_signal_csh(self): |
|
524 | 524 | SHELL = os.environ.get('SHELL', None) |
|
525 | 525 | os.environ['SHELL'] = find_cmd("csh") |
|
526 | 526 | try: |
|
527 | 527 | self.test_exit_code_signal() |
|
528 | 528 | finally: |
|
529 | 529 | if SHELL is not None: |
|
530 | 530 | os.environ['SHELL'] = SHELL |
|
531 | 531 | else: |
|
532 | 532 | del os.environ['SHELL'] |
|
533 | 533 | |
|
534 | 534 | class TestSystemRaw(unittest.TestCase, ExitCodeChecks): |
|
535 | 535 | system = ip.system_raw |
|
536 | 536 | |
|
537 | 537 | @onlyif_unicode_paths |
|
538 | 538 | def test_1(self): |
|
539 | 539 | """Test system_raw with non-ascii cmd |
|
540 | 540 | """ |
|
541 | 541 | cmd = u'''python -c "'Γ₯Àâ'" ''' |
|
542 | 542 | ip.system_raw(cmd) |
|
543 | 543 | |
|
544 | 544 | # TODO: Exit codes are currently ignored on Windows. |
|
545 | 545 | class TestSystemPipedExitCode(unittest.TestCase, ExitCodeChecks): |
|
546 | 546 | system = ip.system_piped |
|
547 | 547 | |
|
548 | 548 | @skip_win32 |
|
549 | 549 | def test_exit_code_ok(self): |
|
550 | 550 | ExitCodeChecks.test_exit_code_ok(self) |
|
551 | 551 | |
|
552 | 552 | @skip_win32 |
|
553 | 553 | def test_exit_code_error(self): |
|
554 | 554 | ExitCodeChecks.test_exit_code_error(self) |
|
555 | 555 | |
|
556 | 556 | @skip_win32 |
|
557 | 557 | def test_exit_code_signal(self): |
|
558 | 558 | ExitCodeChecks.test_exit_code_signal(self) |
|
559 | 559 | |
|
560 | 560 | class TestModules(unittest.TestCase, tt.TempFileMixin): |
|
561 | 561 | def test_extraneous_loads(self): |
|
562 | 562 | """Test we're not loading modules on startup that we shouldn't. |
|
563 | 563 | """ |
|
564 | 564 | self.mktmp("import sys\n" |
|
565 | 565 | "print('numpy' in sys.modules)\n" |
|
566 | 566 | "print('IPython.parallel' in sys.modules)\n" |
|
567 | 567 | "print('IPython.kernel.zmq' in sys.modules)\n" |
|
568 | 568 | ) |
|
569 | 569 | out = "False\nFalse\nFalse\n" |
|
570 | 570 | tt.ipexec_validate(self.fname, out) |
|
571 | 571 | |
|
572 | 572 | class Negator(ast.NodeTransformer): |
|
573 | 573 | """Negates all number literals in an AST.""" |
|
574 | 574 | def visit_Num(self, node): |
|
575 | 575 | node.n = -node.n |
|
576 | 576 | return node |
|
577 | 577 | |
|
578 | 578 | class TestAstTransform(unittest.TestCase): |
|
579 | 579 | def setUp(self): |
|
580 | 580 | self.negator = Negator() |
|
581 | 581 | ip.ast_transformers.append(self.negator) |
|
582 | 582 | |
|
583 | 583 | def tearDown(self): |
|
584 | 584 | ip.ast_transformers.remove(self.negator) |
|
585 | 585 | |
|
586 | 586 | def test_run_cell(self): |
|
587 | 587 | with tt.AssertPrints('-34'): |
|
588 | 588 | ip.run_cell('print (12 + 22)') |
|
589 | 589 | |
|
590 | 590 | # A named reference to a number shouldn't be transformed. |
|
591 | 591 | ip.user_ns['n'] = 55 |
|
592 | 592 | with tt.AssertNotPrints('-55'): |
|
593 | 593 | ip.run_cell('print (n)') |
|
594 | 594 | |
|
595 | 595 | def test_timeit(self): |
|
596 | 596 | called = set() |
|
597 | 597 | def f(x): |
|
598 | 598 | called.add(x) |
|
599 | 599 | ip.push({'f':f}) |
|
600 | 600 | |
|
601 | 601 | with tt.AssertPrints("best of "): |
|
602 | 602 | ip.run_line_magic("timeit", "-n1 f(1)") |
|
603 | 603 | self.assertEqual(called, set([-1])) |
|
604 | 604 | called.clear() |
|
605 | 605 | |
|
606 | 606 | with tt.AssertPrints("best of "): |
|
607 | 607 | ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)") |
|
608 | 608 | self.assertEqual(called, set([-2, -3])) |
|
609 | 609 | |
|
610 | 610 | def test_time(self): |
|
611 | 611 | called = [] |
|
612 | 612 | def f(x): |
|
613 | 613 | called.append(x) |
|
614 | 614 | ip.push({'f':f}) |
|
615 | 615 | |
|
616 | 616 | # Test with an expression |
|
617 | 617 | with tt.AssertPrints("Wall time: "): |
|
618 | 618 | ip.run_line_magic("time", "f(5+9)") |
|
619 | 619 | self.assertEqual(called, [-14]) |
|
620 | 620 | called[:] = [] |
|
621 | 621 | |
|
622 | 622 | # Test with a statement (different code path) |
|
623 | 623 | with tt.AssertPrints("Wall time: "): |
|
624 | 624 | ip.run_line_magic("time", "a = f(-3 + -2)") |
|
625 | 625 | self.assertEqual(called, [5]) |
|
626 | 626 | |
|
627 | 627 | def test_macro(self): |
|
628 | 628 | ip.push({'a':10}) |
|
629 | 629 | # The AST transformation makes this do a+=-1 |
|
630 | 630 | ip.define_macro("amacro", "a+=1\nprint(a)") |
|
631 | 631 | |
|
632 | 632 | with tt.AssertPrints("9"): |
|
633 | 633 | ip.run_cell("amacro") |
|
634 | 634 | with tt.AssertPrints("8"): |
|
635 | 635 | ip.run_cell("amacro") |
|
636 | 636 | |
|
637 | 637 | class IntegerWrapper(ast.NodeTransformer): |
|
638 | 638 | """Wraps all integers in a call to Integer()""" |
|
639 | 639 | def visit_Num(self, node): |
|
640 | 640 | if isinstance(node.n, int): |
|
641 | 641 | return ast.Call(func=ast.Name(id='Integer', ctx=ast.Load()), |
|
642 | 642 | args=[node], keywords=[]) |
|
643 | 643 | return node |
|
644 | 644 | |
|
645 | 645 | class TestAstTransform2(unittest.TestCase): |
|
646 | 646 | def setUp(self): |
|
647 | 647 | self.intwrapper = IntegerWrapper() |
|
648 | 648 | ip.ast_transformers.append(self.intwrapper) |
|
649 | 649 | |
|
650 | 650 | self.calls = [] |
|
651 | 651 | def Integer(*args): |
|
652 | 652 | self.calls.append(args) |
|
653 | 653 | return args |
|
654 | 654 | ip.push({"Integer": Integer}) |
|
655 | 655 | |
|
656 | 656 | def tearDown(self): |
|
657 | 657 | ip.ast_transformers.remove(self.intwrapper) |
|
658 | 658 | del ip.user_ns['Integer'] |
|
659 | 659 | |
|
660 | 660 | def test_run_cell(self): |
|
661 | 661 | ip.run_cell("n = 2") |
|
662 | 662 | self.assertEqual(self.calls, [(2,)]) |
|
663 | 663 | |
|
664 | 664 | # This shouldn't throw an error |
|
665 | 665 | ip.run_cell("o = 2.0") |
|
666 | 666 | self.assertEqual(ip.user_ns['o'], 2.0) |
|
667 | 667 | |
|
668 | 668 | def test_timeit(self): |
|
669 | 669 | called = set() |
|
670 | 670 | def f(x): |
|
671 | 671 | called.add(x) |
|
672 | 672 | ip.push({'f':f}) |
|
673 | 673 | |
|
674 | 674 | with tt.AssertPrints("best of "): |
|
675 | 675 | ip.run_line_magic("timeit", "-n1 f(1)") |
|
676 | 676 | self.assertEqual(called, set([(1,)])) |
|
677 | 677 | called.clear() |
|
678 | 678 | |
|
679 | 679 | with tt.AssertPrints("best of "): |
|
680 | 680 | ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)") |
|
681 | 681 | self.assertEqual(called, set([(2,), (3,)])) |
|
682 | 682 | |
|
683 | 683 | class ErrorTransformer(ast.NodeTransformer): |
|
684 | 684 | """Throws an error when it sees a number.""" |
|
685 | 685 | def visit_Num(self, node): |
|
686 | 686 | raise ValueError("test") |
|
687 | 687 | |
|
688 | 688 | class TestAstTransformError(unittest.TestCase): |
|
689 | 689 | def test_unregistering(self): |
|
690 | 690 | err_transformer = ErrorTransformer() |
|
691 | 691 | ip.ast_transformers.append(err_transformer) |
|
692 | 692 | |
|
693 | 693 | with tt.AssertPrints("unregister", channel='stderr'): |
|
694 | 694 | ip.run_cell("1 + 2") |
|
695 | 695 | |
|
696 | 696 | # This should have been removed. |
|
697 | 697 | nt.assert_not_in(err_transformer, ip.ast_transformers) |
|
698 | 698 | |
|
699 | 699 | |
|
700 | 700 | class StringRejector(ast.NodeTransformer): |
|
701 | 701 | """Throws an InputRejected when it sees a string literal. |
|
702 | 702 | |
|
703 | 703 | Used to verify that NodeTransformers can signal that a piece of code should |
|
704 | 704 | not be executed by throwing an InputRejected. |
|
705 | 705 | """ |
|
706 | 706 | |
|
707 | 707 | def visit_Str(self, node): |
|
708 | 708 | raise InputRejected("test") |
|
709 | 709 | |
|
710 | 710 | |
|
711 | 711 | class TestAstTransformInputRejection(unittest.TestCase): |
|
712 | 712 | |
|
713 | 713 | def setUp(self): |
|
714 | 714 | self.transformer = StringRejector() |
|
715 | 715 | ip.ast_transformers.append(self.transformer) |
|
716 | 716 | |
|
717 | 717 | def tearDown(self): |
|
718 | 718 | ip.ast_transformers.remove(self.transformer) |
|
719 | 719 | |
|
720 | 720 | def test_input_rejection(self): |
|
721 | 721 | """Check that NodeTransformers can reject input.""" |
|
722 | 722 | |
|
723 | 723 | expect_exception_tb = tt.AssertPrints("InputRejected: test") |
|
724 | 724 | expect_no_cell_output = tt.AssertNotPrints("'unsafe'", suppress=False) |
|
725 | 725 | |
|
726 | 726 | # Run the same check twice to verify that the transformer is not |
|
727 | 727 | # disabled after raising. |
|
728 | 728 | with expect_exception_tb, expect_no_cell_output: |
|
729 | 729 | ip.run_cell("'unsafe'") |
|
730 | 730 | |
|
731 | 731 | with expect_exception_tb, expect_no_cell_output: |
|
732 | 732 | ip.run_cell("'unsafe'") |
|
733 | 733 | |
|
734 | 734 | def test__IPYTHON__(): |
|
735 | 735 | # This shouldn't raise a NameError, that's all |
|
736 | 736 | __IPYTHON__ |
|
737 | 737 | |
|
738 | 738 | |
|
739 | 739 | class DummyRepr(object): |
|
740 | 740 | def __repr__(self): |
|
741 | 741 | return "DummyRepr" |
|
742 | 742 | |
|
743 | 743 | def _repr_html_(self): |
|
744 | 744 | return "<b>dummy</b>" |
|
745 | 745 | |
|
746 | 746 | def _repr_javascript_(self): |
|
747 | 747 | return "console.log('hi');", {'key': 'value'} |
|
748 | 748 | |
|
749 | 749 | |
|
750 | 750 | def test_user_variables(): |
|
751 | 751 | # enable all formatters |
|
752 | 752 | ip.display_formatter.active_types = ip.display_formatter.format_types |
|
753 | 753 | |
|
754 | 754 | ip.user_ns['dummy'] = d = DummyRepr() |
|
755 | 755 | keys = set(['dummy', 'doesnotexist']) |
|
756 | 756 | r = ip.user_expressions({ key:key for key in keys}) |
|
757 | 757 | |
|
758 | 758 | nt.assert_equal(keys, set(r.keys())) |
|
759 | 759 | dummy = r['dummy'] |
|
760 | 760 | nt.assert_equal(set(['status', 'data', 'metadata']), set(dummy.keys())) |
|
761 | 761 | nt.assert_equal(dummy['status'], 'ok') |
|
762 | 762 | data = dummy['data'] |
|
763 | 763 | metadata = dummy['metadata'] |
|
764 | 764 | nt.assert_equal(data.get('text/html'), d._repr_html_()) |
|
765 | 765 | js, jsmd = d._repr_javascript_() |
|
766 | 766 | nt.assert_equal(data.get('application/javascript'), js) |
|
767 | 767 | nt.assert_equal(metadata.get('application/javascript'), jsmd) |
|
768 | 768 | |
|
769 | 769 | dne = r['doesnotexist'] |
|
770 | 770 | nt.assert_equal(dne['status'], 'error') |
|
771 | 771 | nt.assert_equal(dne['ename'], 'NameError') |
|
772 | 772 | |
|
773 | 773 | # back to text only |
|
774 | 774 | ip.display_formatter.active_types = ['text/plain'] |
|
775 | 775 | |
|
776 | 776 | def test_user_expression(): |
|
777 | 777 | # enable all formatters |
|
778 | 778 | ip.display_formatter.active_types = ip.display_formatter.format_types |
|
779 | 779 | query = { |
|
780 | 780 | 'a' : '1 + 2', |
|
781 | 781 | 'b' : '1/0', |
|
782 | 782 | } |
|
783 | 783 | r = ip.user_expressions(query) |
|
784 | 784 | import pprint |
|
785 | 785 | pprint.pprint(r) |
|
786 | 786 | nt.assert_equal(set(r.keys()), set(query.keys())) |
|
787 | 787 | a = r['a'] |
|
788 | 788 | nt.assert_equal(set(['status', 'data', 'metadata']), set(a.keys())) |
|
789 | 789 | nt.assert_equal(a['status'], 'ok') |
|
790 | 790 | data = a['data'] |
|
791 | 791 | metadata = a['metadata'] |
|
792 | 792 | nt.assert_equal(data.get('text/plain'), '3') |
|
793 | 793 | |
|
794 | 794 | b = r['b'] |
|
795 | 795 | nt.assert_equal(b['status'], 'error') |
|
796 | 796 | nt.assert_equal(b['ename'], 'ZeroDivisionError') |
|
797 | 797 | |
|
798 | 798 | # back to text only |
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799 | 799 | ip.display_formatter.active_types = ['text/plain'] |
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800 | 800 | |
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801 | 801 | |
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802 | 802 | |
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803 | 803 | |
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804 | 804 | |
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805 | 805 | class TestSyntaxErrorTransformer(unittest.TestCase): |
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806 | 806 | """Check that SyntaxError raised by an input transformer is handled by run_cell()""" |
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807 | 807 | |
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808 | 808 | class SyntaxErrorTransformer(InputTransformer): |
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809 | 809 | |
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810 | 810 | def push(self, line): |
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811 | 811 | pos = line.find('syntaxerror') |
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812 | 812 | if pos >= 0: |
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813 | 813 | e = SyntaxError('input contains "syntaxerror"') |
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814 | 814 | e.text = line |
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815 | 815 | e.offset = pos + 1 |
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816 | 816 | raise e |
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817 | 817 | return line |
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818 | 818 | |
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819 | 819 | def reset(self): |
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820 | 820 | pass |
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821 | 821 | |
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822 | 822 | def setUp(self): |
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823 | 823 | self.transformer = TestSyntaxErrorTransformer.SyntaxErrorTransformer() |
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824 | 824 | ip.input_splitter.python_line_transforms.append(self.transformer) |
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825 | 825 | ip.input_transformer_manager.python_line_transforms.append(self.transformer) |
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826 | 826 | |
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827 | 827 | def tearDown(self): |
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828 | 828 | ip.input_splitter.python_line_transforms.remove(self.transformer) |
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829 | 829 | ip.input_transformer_manager.python_line_transforms.remove(self.transformer) |
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830 | 830 | |
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831 | 831 | def test_syntaxerror_input_transformer(self): |
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832 | 832 | with tt.AssertPrints('1234'): |
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833 | 833 | ip.run_cell('1234') |
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834 | 834 | with tt.AssertPrints('SyntaxError: invalid syntax'): |
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835 | 835 | ip.run_cell('1 2 3') # plain python syntax error |
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836 | 836 | with tt.AssertPrints('SyntaxError: input contains "syntaxerror"'): |
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837 | 837 | ip.run_cell('2345 # syntaxerror') # input transformer syntax error |
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838 | 838 | with tt.AssertPrints('3456'): |
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839 | 839 | ip.run_cell('3456') |
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840 | 840 | |
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841 | 841 | |
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842 | 842 |
@@ -1,126 +1,116 b'' | |||
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1 | 1 | """ |
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2 | 2 | Password generation for the IPython notebook. |
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3 | 3 | """ |
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4 | 4 | #----------------------------------------------------------------------------- |
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5 | 5 | # Imports |
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6 | 6 | #----------------------------------------------------------------------------- |
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7 | 7 | # Stdlib |
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8 | 8 | import getpass |
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9 | 9 | import hashlib |
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10 | 10 | import random |
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11 | 11 | |
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12 | 12 | # Our own |
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13 | 13 | from IPython.core.error import UsageError |
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14 | 14 | from IPython.testing.skipdoctest import skip_doctest |
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15 | 15 | from IPython.utils.py3compat import cast_bytes, str_to_bytes |
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16 | 16 | |
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17 | 17 | #----------------------------------------------------------------------------- |
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18 | 18 | # Globals |
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19 | 19 | #----------------------------------------------------------------------------- |
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20 | 20 | |
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21 | 21 | # Length of the salt in nr of hex chars, which implies salt_len * 4 |
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22 | 22 | # bits of randomness. |
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23 | 23 | salt_len = 12 |
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24 | 24 | |
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25 | 25 | #----------------------------------------------------------------------------- |
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26 | 26 | # Functions |
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27 | 27 | #----------------------------------------------------------------------------- |
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28 | 28 | |
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29 | 29 | @skip_doctest |
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30 | 30 | def passwd(passphrase=None, algorithm='sha1'): |
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31 | 31 | """Generate hashed password and salt for use in notebook configuration. |
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32 | 32 | |
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33 | 33 | In the notebook configuration, set `c.NotebookApp.password` to |
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34 | 34 | the generated string. |
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35 | 35 | |
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36 | 36 | Parameters |
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37 | 37 | ---------- |
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38 | 38 | passphrase : str |
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39 | 39 | Password to hash. If unspecified, the user is asked to input |
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40 | 40 | and verify a password. |
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41 | 41 | algorithm : str |
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42 | 42 | Hashing algorithm to use (e.g, 'sha1' or any argument supported |
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43 | 43 | by :func:`hashlib.new`). |
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44 | 44 | |
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45 | 45 | Returns |
|
46 | 46 | ------- |
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47 | 47 | hashed_passphrase : str |
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48 | 48 | Hashed password, in the format 'hash_algorithm:salt:passphrase_hash'. |
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49 | 49 | |
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50 | 50 | Examples |
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51 | 51 | -------- |
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52 | 52 | >>> passwd('mypassword') |
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53 | 53 | 'sha1:7cf3:b7d6da294ea9592a9480c8f52e63cd42cfb9dd12' |
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54 | 54 | |
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55 | 55 | """ |
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56 | 56 | if passphrase is None: |
|
57 | 57 | for i in range(3): |
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58 | 58 | p0 = getpass.getpass('Enter password: ') |
|
59 | 59 | p1 = getpass.getpass('Verify password: ') |
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60 | 60 | if p0 == p1: |
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61 | 61 | passphrase = p0 |
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62 | 62 | break |
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63 | 63 | else: |
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64 | 64 | print('Passwords do not match.') |
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65 | 65 | else: |
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66 | 66 | raise UsageError('No matching passwords found. Giving up.') |
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67 | 67 | |
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68 | 68 | h = hashlib.new(algorithm) |
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69 | 69 | salt = ('%0' + str(salt_len) + 'x') % random.getrandbits(4 * salt_len) |
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70 | 70 | h.update(cast_bytes(passphrase, 'utf-8') + str_to_bytes(salt, 'ascii')) |
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71 | 71 | |
|
72 | 72 | return ':'.join((algorithm, salt, h.hexdigest())) |
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73 | 73 | |
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74 | 74 | |
|
75 | 75 | def passwd_check(hashed_passphrase, passphrase): |
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76 | 76 | """Verify that a given passphrase matches its hashed version. |
|
77 | 77 | |
|
78 | 78 | Parameters |
|
79 | 79 | ---------- |
|
80 | 80 | hashed_passphrase : str |
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81 | 81 | Hashed password, in the format returned by `passwd`. |
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82 | 82 | passphrase : str |
|
83 | 83 | Passphrase to validate. |
|
84 | 84 | |
|
85 | 85 | Returns |
|
86 | 86 | ------- |
|
87 | 87 | valid : bool |
|
88 | 88 | True if the passphrase matches the hash. |
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89 | 89 | |
|
90 | 90 | Examples |
|
91 | 91 | -------- |
|
92 | 92 | >>> from IPython.lib.security import passwd_check |
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93 | 93 | >>> passwd_check('sha1:0e112c3ddfce:a68df677475c2b47b6e86d0467eec97ac5f4b85a', |
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94 | 94 | ... 'mypassword') |
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95 | 95 | True |
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96 | 96 | |
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97 | 97 | >>> passwd_check('sha1:0e112c3ddfce:a68df677475c2b47b6e86d0467eec97ac5f4b85a', |
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98 | 98 | ... 'anotherpassword') |
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99 | 99 | False |
|
100 | 100 | """ |
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101 | 101 | try: |
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102 | 102 | algorithm, salt, pw_digest = hashed_passphrase.split(':', 2) |
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103 | 103 | except (ValueError, TypeError): |
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104 | 104 | return False |
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105 | 105 | |
|
106 | 106 | try: |
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107 | 107 | h = hashlib.new(algorithm) |
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108 | 108 | except ValueError: |
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109 | 109 | return False |
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110 | 110 | |
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111 | 111 | if len(pw_digest) == 0: |
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112 | 112 | return False |
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113 | 113 | |
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114 | 114 | h.update(cast_bytes(passphrase, 'utf-8') + cast_bytes(salt, 'ascii')) |
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115 | 115 | |
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116 | 116 | return h.hexdigest() == pw_digest |
|
117 | ||
|
118 | #----------------------------------------------------------------------------- | |
|
119 | # Exception classes | |
|
120 | #----------------------------------------------------------------------------- | |
|
121 | class InputRejected(Exception): | |
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122 | """Input rejected by ast transformer. | |
|
123 | ||
|
124 | To be raised by user-supplied ast.NodeTransformers when an input should not | |
|
125 | be executed. | |
|
126 | """ |
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