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# -*- coding: utf-8 -*-
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"""Sphinx directive to support embedded IPython code.
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This directive allows pasting of entire interactive IPython sessions, prompts
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and all, and their code will actually get re-executed at doc build time, with
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all prompts renumbered sequentially.
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To enable this directive, simply list it in your Sphinx ``conf.py`` file
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(making sure the directory where you placed it is visible to sphinx, as is
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needed for all Sphinx directives).
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By default this directive assumes that your prompts are unchanged IPython ones,
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but this can be customized. For example, the following code in your Sphinx
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config file will configure this directive for the following input/output
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prompts ``Yade [1]:`` and ``-> [1]:``::
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import ipython_directive as id
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id.rgxin =re.compile(r'(?:In |Yade )\[(\d+)\]:\s?(.*)\s*')
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id.rgxout=re.compile(r'(?:Out| -> )\[(\d+)\]:\s?(.*)\s*')
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id.fmtin ='Yade [%d]:'
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id.fmtout=' -> [%d]:'
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from IPython import Config
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id.CONFIG = Config(
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prompt_in1="Yade [\#]:",
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prompt_in2=" .\D..",
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prompt_out=" -> [\#]:"
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)
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id.reconfig_shell()
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import ipython_console_highlighting as ich
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ich.IPythonConsoleLexer.input_prompt=
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re.compile("(Yade \[[0-9]+\]: )|( \.\.\.+:)")
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ich.IPythonConsoleLexer.output_prompt=
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re.compile("(( -> )|(Out)\[[0-9]+\]: )|( \.\.\.+:)")
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ich.IPythonConsoleLexer.continue_prompt=re.compile(" \.\.\.+:")
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ToDo
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----
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- Turn the ad-hoc test() function into a real test suite.
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- Break up ipython-specific functionality from matplotlib stuff into better
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separated code.
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- Make sure %bookmarks used internally are removed on exit.
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Authors
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-------
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- John D Hunter: orignal author.
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- Fernando Perez: refactoring, documentation, cleanups, port to 0.11.
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- VáclavŠmilauer <eudoxos-AT-arcig.cz>: Prompt generalizations.
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"""
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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# Stdlib
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import cStringIO
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import os
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import re
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import sys
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# To keep compatibility with various python versions
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try:
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from hashlib import md5
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except ImportError:
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from md5 import md5
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# Third-party
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import matplotlib
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import sphinx
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from docutils.parsers.rst import directives
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matplotlib.use('Agg')
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# Our own
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from IPython import Config, InteractiveShell
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from IPython.utils.io import Term
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#-----------------------------------------------------------------------------
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# Globals
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#-----------------------------------------------------------------------------
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sphinx_version = sphinx.__version__.split(".")
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# The split is necessary for sphinx beta versions where the string is
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# '6b1'
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sphinx_version = tuple([int(re.split('[a-z]', x)[0])
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for x in sphinx_version[:2]])
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COMMENT, INPUT, OUTPUT = range(3)
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CONFIG = Config()
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rgxin = re.compile('In \[(\d+)\]:\s?(.*)\s*')
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rgxout = re.compile('Out\[(\d+)\]:\s?(.*)\s*')
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fmtin = 'In [%d]:'
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fmtout = 'Out[%d]:'
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#-----------------------------------------------------------------------------
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# Functions and class declarations
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#-----------------------------------------------------------------------------
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def block_parser(part):
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"""
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part is a string of ipython text, comprised of at most one
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input, one ouput, comments, and blank lines. The block parser
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parses the text into a list of::
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blocks = [ (TOKEN0, data0), (TOKEN1, data1), ...]
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where TOKEN is one of [COMMENT | INPUT | OUTPUT ] and
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data is, depending on the type of token::
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COMMENT : the comment string
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INPUT: the (DECORATOR, INPUT_LINE, REST) where
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DECORATOR: the input decorator (or None)
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INPUT_LINE: the input as string (possibly multi-line)
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REST : any stdout generated by the input line (not OUTPUT)
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OUTPUT: the output string, possibly multi-line
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"""
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block = []
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lines = part.split('\n')
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N = len(lines)
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i = 0
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decorator = None
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while 1:
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if i==N:
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# nothing left to parse -- the last line
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break
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line = lines[i]
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i += 1
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line_stripped = line.strip()
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if line_stripped.startswith('#'):
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block.append((COMMENT, line))
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continue
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if line_stripped.startswith('@'):
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# we're assuming at most one decorator -- may need to
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# rethink
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decorator = line_stripped
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continue
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# does this look like an input line?
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matchin = rgxin.match(line)
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if matchin:
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lineno, inputline = int(matchin.group(1)), matchin.group(2)
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# the ....: continuation string
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continuation = ' %s:'%''.join(['.']*(len(str(lineno))+2))
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Nc = len(continuation)
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# input lines can continue on for more than one line, if
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# we have a '\' line continuation char or a function call
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# echo line 'print'. The input line can only be
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# terminated by the end of the block or an output line, so
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# we parse out the rest of the input line if it is
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# multiline as well as any echo text
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rest = []
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while i<N:
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# look ahead; if the next line is blank, or a comment, or
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# an output line, we're done
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nextline = lines[i]
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matchout = rgxout.match(nextline)
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#print "nextline=%s, continuation=%s, starts=%s"%(nextline, continuation, nextline.startswith(continuation))
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if matchout or nextline.startswith('#'):
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break
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elif nextline.startswith(continuation):
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inputline += '\n' + nextline[Nc:]
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else:
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rest.append(nextline)
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i+= 1
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block.append((INPUT, (decorator, inputline, '\n'.join(rest))))
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continue
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# if it looks like an output line grab all the text to the end
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# of the block
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matchout = rgxout.match(line)
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if matchout:
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lineno, output = int(matchout.group(1)), matchout.group(2)
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if i<N-1:
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output = '\n'.join([output] + lines[i:])
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block.append((OUTPUT, output))
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break
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return block
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class EmbeddedSphinxShell(object):
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"""An embedded IPython instance to run inside Sphinx"""
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def __init__(self):
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self.cout = cStringIO.StringIO()
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Term.cout = self.cout
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Term.cerr = self.cout
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# For debugging, so we can see normal output, use this:
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# from IPython.utils.io import Tee
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#Term.cout = Tee(self.cout, channel='stdout') # dbg
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#Term.cerr = Tee(self.cout, channel='stderr') # dbg
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# Create config object for IPython
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config = Config()
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config.Global.display_banner = False
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config.Global.exec_lines = ['import numpy as np',
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'from pylab import *'
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]
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config.InteractiveShell.autocall = False
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config.InteractiveShell.autoindent = False
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config.InteractiveShell.colors = 'NoColor'
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# Create and initialize ipython, but don't start its mainloop
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IP = InteractiveShell(parent=None, config=config)
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# Store a few parts of IPython we'll need.
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self.IP = IP
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self.user_ns = self.IP.user_ns
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self.user_global_ns = self.IP.user_global_ns
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self.input = ''
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self.output = ''
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self.is_verbatim = False
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self.is_doctest = False
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self.is_suppress = False
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# on the first call to the savefig decorator, we'll import
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# pyplot as plt so we can make a call to the plt.gcf().savefig
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self._pyplot_imported = False
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# we need bookmark the current dir first so we can save
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# relative to it
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self.process_input_line('bookmark ipy_basedir')
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self.cout.seek(0)
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self.cout.truncate(0)
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def process_input_line(self, line):
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"""process the input, capturing stdout"""
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#print "input='%s'"%self.input
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stdout = sys.stdout
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try:
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sys.stdout = self.cout
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self.IP.push_line(line)
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finally:
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sys.stdout = stdout
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# Callbacks for each type of token
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def process_input(self, data, input_prompt, lineno):
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"""Process data block for INPUT token."""
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decorator, input, rest = data
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image_file = None
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#print 'INPUT:', data # dbg
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is_verbatim = decorator=='@verbatim' or self.is_verbatim
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is_doctest = decorator=='@doctest' or self.is_doctest
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is_suppress = decorator=='@suppress' or self.is_suppress
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is_savefig = decorator is not None and \
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decorator.startswith('@savefig')
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input_lines = input.split('\n')
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continuation = ' %s:'%''.join(['.']*(len(str(lineno))+2))
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Nc = len(continuation)
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if is_savefig:
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saveargs = decorator.split(' ')
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filename = saveargs[1]
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outfile = os.path.join('_static/%s'%filename)
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# build out an image directive like
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# .. image:: somefile.png
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# :width 4in
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#
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# from an input like
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# savefig somefile.png width=4in
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imagerows = ['.. image:: %s'%outfile]
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for kwarg in saveargs[2:]:
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arg, val = kwarg.split('=')
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arg = arg.strip()
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val = val.strip()
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imagerows.append(' :%s: %s'%(arg, val))
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image_file = outfile
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image_directive = '\n'.join(imagerows)
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# TODO: can we get "rest" from ipython
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#self.process_input_line('\n'.join(input_lines))
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ret = []
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is_semicolon = False
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for i, line in enumerate(input_lines):
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if line.endswith(';'):
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is_semicolon = True
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if i==0:
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# process the first input line
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if is_verbatim:
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self.process_input_line('')
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else:
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# only submit the line in non-verbatim mode
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self.process_input_line(line)
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formatted_line = '%s %s'%(input_prompt, line)
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else:
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# process a continuation line
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if not is_verbatim:
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self.process_input_line(line)
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formatted_line = '%s %s'%(continuation, line)
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if not is_suppress:
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ret.append(formatted_line)
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if not is_suppress:
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if len(rest.strip()):
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if is_verbatim:
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# the "rest" is the standard output of the
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# input, which needs to be added in
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# verbatim mode
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ret.append(rest)
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self.cout.seek(0)
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output = self.cout.read()
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if not is_suppress and not is_semicolon:
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ret.append(output)
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self.cout.truncate(0)
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return ret, input_lines, output, is_doctest, image_file
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#print 'OUTPUT', output # dbg
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def process_output(self, data, output_prompt,
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input_lines, output, is_doctest, image_file):
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"""Process data block for OUTPUT token."""
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if is_doctest:
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submitted = data.strip()
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found = output
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if found is not None:
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found = found.strip()
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# XXX - fperez: in 0.11, 'output' never comes with the prompt
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# in it, just the actual output text. So I think all this code
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# can be nuked...
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## ind = found.find(output_prompt)
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## if ind<0:
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## e='output prompt="%s" does not match out line=%s' % \
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## (output_prompt, found)
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## raise RuntimeError(e)
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## found = found[len(output_prompt):].strip()
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if found!=submitted:
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e = ('doctest failure for input_lines="%s" with '
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'found_output="%s" and submitted output="%s"' %
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(input_lines, found, submitted) )
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raise RuntimeError(e)
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#print 'doctest PASSED for input_lines="%s" with found_output="%s" and submitted output="%s"'%(input_lines, found, submitted)
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def process_comment(self, data):
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"""Process data block for COMMENT token."""
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if not self.is_suppress:
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return [data]
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def process_block(self, block):
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"""
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process block from the block_parser and return a list of processed lines
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"""
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ret = []
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output = None
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input_lines = None
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m = rgxin.match(str(self.IP.outputcache.prompt1).strip())
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lineno = int(m.group(1))
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input_prompt = fmtin%lineno
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output_prompt = fmtout%lineno
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image_file = None
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image_directive = None
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# XXX - This needs a second refactor. There's too much state being
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# held globally, which makes for a very awkward interface and large,
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# hard to test functions. I've already broken this up at least into
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# three separate processors to isolate the logic better, but this only
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# serves to highlight the coupling. Next we need to clean it up...
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for token, data in block:
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if token==COMMENT:
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out_data = self.process_comment(data)
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elif token==INPUT:
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out_data, input_lines, output, is_doctest, image_file= \
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self.process_input(data, input_prompt, lineno)
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elif token==OUTPUT:
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out_data = \
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self.process_output(data, output_prompt,
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input_lines, output, is_doctest,
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image_file)
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if out_data:
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ret.extend(out_data)
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if image_file is not None:
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self.ensure_pyplot()
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command = 'plt.gcf().savefig("%s")'%image_file
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print 'SAVEFIG', command # dbg
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self.process_input_line('bookmark ipy_thisdir')
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self.process_input_line('cd -b ipy_basedir')
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self.process_input_line(command)
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self.process_input_line('cd -b ipy_thisdir')
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self.cout.seek(0)
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self.cout.truncate(0)
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return ret, image_directive
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|
def ensure_pyplot(self):
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|
if self._pyplot_imported:
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|
return
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|
self.process_input_line('import matplotlib.pyplot as plt')
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|
|
# A global instance used below. XXX: not sure why this can't be created inside
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|
|
# ipython_directive itself.
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|
|
shell = EmbeddedSphinxShell()
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|
|
|
|
def reconfig_shell():
|
|
|
"""Called after setting module-level variables to re-instantiate
|
|
|
with the set values (since shell is instantiated first at import-time
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|
|
when module variables have default values)"""
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|
|
global shell
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|
|
shell = EmbeddedSphinxShell()
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|
|
|
|
|
|
|
|
def ipython_directive(name, arguments, options, content, lineno,
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|
|
content_offset, block_text, state, state_machine,
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|
):
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|
debug = ipython_directive.DEBUG
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|
|
shell.is_suppress = options.has_key('suppress')
|
|
|
shell.is_doctest = options.has_key('doctest')
|
|
|
shell.is_verbatim = options.has_key('verbatim')
|
|
|
|
|
|
#print 'ipy', shell.is_suppress, options
|
|
|
parts = '\n'.join(content).split('\n\n')
|
|
|
lines = ['.. sourcecode:: ipython', '']
|
|
|
|
|
|
figures = []
|
|
|
for part in parts:
|
|
|
block = block_parser(part)
|
|
|
|
|
|
if len(block):
|
|
|
rows, figure = shell.process_block(block)
|
|
|
for row in rows:
|
|
|
lines.extend([' %s'%line for line in row.split('\n')])
|
|
|
|
|
|
if figure is not None:
|
|
|
figures.append(figure)
|
|
|
|
|
|
for figure in figures:
|
|
|
lines.append('')
|
|
|
lines.extend(figure.split('\n'))
|
|
|
lines.append('')
|
|
|
|
|
|
#print lines
|
|
|
if len(lines)>2:
|
|
|
if debug:
|
|
|
print '\n'.join(lines)
|
|
|
else:
|
|
|
#print 'INSERTING %d lines'%len(lines)
|
|
|
state_machine.insert_input(
|
|
|
lines, state_machine.input_lines.source(0))
|
|
|
|
|
|
return []
|
|
|
|
|
|
ipython_directive.DEBUG = False
|
|
|
ipython_directive.DEBUG = True # dbg
|
|
|
|
|
|
# Enable as a proper Sphinx directive
|
|
|
def setup(app):
|
|
|
setup.app = app
|
|
|
options = {'suppress': directives.flag,
|
|
|
'doctest': directives.flag,
|
|
|
'verbatim': directives.flag,
|
|
|
}
|
|
|
|
|
|
app.add_directive('ipython', ipython_directive, True, (0, 2, 0), **options)
|
|
|
|
|
|
|
|
|
# Simple smoke test, needs to be converted to a proper automatic test.
|
|
|
def test():
|
|
|
|
|
|
examples = [
|
|
|
r"""
|
|
|
In [9]: pwd
|
|
|
Out[9]: '/home/jdhunter/py4science/book'
|
|
|
|
|
|
In [10]: cd bookdata/
|
|
|
/home/jdhunter/py4science/book/bookdata
|
|
|
|
|
|
In [2]: from pylab import *
|
|
|
|
|
|
In [2]: ion()
|
|
|
|
|
|
In [3]: im = imread('stinkbug.png')
|
|
|
|
|
|
@savefig mystinkbug.png width=4in
|
|
|
In [4]: imshow(im)
|
|
|
Out[4]: <matplotlib.image.AxesImage object at 0x39ea850>
|
|
|
|
|
|
""",
|
|
|
r"""
|
|
|
|
|
|
In [1]: x = 'hello world'
|
|
|
|
|
|
# string methods can be
|
|
|
# used to alter the string
|
|
|
@doctest
|
|
|
In [2]: x.upper()
|
|
|
Out[2]: 'HELLO WORLD'
|
|
|
|
|
|
@verbatim
|
|
|
In [3]: x.st<TAB>
|
|
|
x.startswith x.strip
|
|
|
""",
|
|
|
r"""
|
|
|
|
|
|
In [130]: url = 'http://ichart.finance.yahoo.com/table.csv?s=CROX\
|
|
|
.....: &d=9&e=22&f=2009&g=d&a=1&br=8&c=2006&ignore=.csv'
|
|
|
|
|
|
In [131]: print url.split('&')
|
|
|
['http://ichart.finance.yahoo.com/table.csv?s=CROX', 'd=9', 'e=22', 'f=2009', 'g=d', 'a=1', 'b=8', 'c=2006', 'ignore=.csv']
|
|
|
|
|
|
In [60]: import urllib
|
|
|
|
|
|
""",
|
|
|
r"""\
|
|
|
|
|
|
In [133]: import numpy.random
|
|
|
|
|
|
@suppress
|
|
|
In [134]: numpy.random.seed(2358)
|
|
|
|
|
|
@doctest
|
|
|
In [135]: np.random.rand(10,2)
|
|
|
Out[135]:
|
|
|
array([[ 0.64524308, 0.59943846],
|
|
|
[ 0.47102322, 0.8715456 ],
|
|
|
[ 0.29370834, 0.74776844],
|
|
|
[ 0.99539577, 0.1313423 ],
|
|
|
[ 0.16250302, 0.21103583],
|
|
|
[ 0.81626524, 0.1312433 ],
|
|
|
[ 0.67338089, 0.72302393],
|
|
|
[ 0.7566368 , 0.07033696],
|
|
|
[ 0.22591016, 0.77731835],
|
|
|
[ 0.0072729 , 0.34273127]])
|
|
|
|
|
|
""",
|
|
|
|
|
|
r"""
|
|
|
In [106]: print x
|
|
|
jdh
|
|
|
|
|
|
In [109]: for i in range(10):
|
|
|
.....: print i
|
|
|
.....:
|
|
|
.....:
|
|
|
0
|
|
|
1
|
|
|
2
|
|
|
3
|
|
|
4
|
|
|
5
|
|
|
6
|
|
|
7
|
|
|
8
|
|
|
9
|
|
|
""",
|
|
|
|
|
|
r"""
|
|
|
|
|
|
In [144]: from pylab import *
|
|
|
|
|
|
In [145]: ion()
|
|
|
|
|
|
# use a semicolon to suppress the output
|
|
|
@savefig test_hist.png width=4in
|
|
|
In [151]: hist(np.random.randn(10000), 100);
|
|
|
|
|
|
|
|
|
@savefig test_plot.png width=4in
|
|
|
In [151]: plot(np.random.randn(10000), 'o');
|
|
|
""",
|
|
|
|
|
|
r"""
|
|
|
# use a semicolon to suppress the output
|
|
|
In [151]: plt.clf()
|
|
|
|
|
|
@savefig plot_simple.png width=4in
|
|
|
In [151]: plot([1,2,3])
|
|
|
|
|
|
@savefig hist_simple.png width=4in
|
|
|
In [151]: hist(np.random.randn(10000), 100);
|
|
|
|
|
|
""",
|
|
|
r"""
|
|
|
# update the current fig
|
|
|
In [151]: ylabel('number')
|
|
|
|
|
|
In [152]: title('normal distribution')
|
|
|
|
|
|
|
|
|
@savefig hist_with_text.png
|
|
|
In [153]: grid(True)
|
|
|
|
|
|
""",
|
|
|
]
|
|
|
|
|
|
#ipython_directive.DEBUG = True # dbg
|
|
|
#options = dict(suppress=True) # dbg
|
|
|
options = dict()
|
|
|
for example in examples:
|
|
|
content = example.split('\n')
|
|
|
ipython_directive('debug', arguments=None, options=options,
|
|
|
content=content, lineno=0,
|
|
|
content_offset=None, block_text=None,
|
|
|
state=None, state_machine=None,
|
|
|
)
|
|
|
|
|
|
# Run test suite as a script
|
|
|
if __name__=='__main__':
|
|
|
if not os.path.isdir('_static'):
|
|
|
os.mkdir('_static')
|
|
|
test()
|
|
|
print 'All OK? Check figures in _static/'
|
|
|
|
