##// END OF EJS Templates
Fix capitalization on pathlib import
Justin Palmer -
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@@ -1,105 +1,105 b''
1 1 """Implementation of packaging-related magic functions.
2 2 """
3 3 #-----------------------------------------------------------------------------
4 4 # Copyright (c) 2018 The IPython Development Team.
5 5 #
6 6 # Distributed under the terms of the Modified BSD License.
7 7 #
8 8 # The full license is in the file COPYING.txt, distributed with this software.
9 9 #-----------------------------------------------------------------------------
10 10
11 11 import re
12 12 import shlex
13 13 import sys
14 from Pathlib import Path
14 from pathlib import Path
15 15
16 16 from pathlib import Path
17 17 from IPython.core.magic import Magics, magics_class, line_magic
18 18
19 19
20 20 def _is_conda_environment():
21 21 """Return True if the current Python executable is in a conda env"""
22 22 # TODO: does this need to change on windows?
23 23 return Path(sys.prefix, "conda-meta", "history").exists()
24 24
25 25
26 26 def _get_conda_executable():
27 27 """Find the path to the conda executable"""
28 28 # Check if there is a conda executable in the same directory as the Python executable.
29 29 # This is the case within conda's root environment.
30 30 conda = Path(sys.executable).parent / "conda"
31 31 if conda.isfile():
32 32 return str(conda)
33 33
34 34 # Otherwise, attempt to extract the executable from conda history.
35 35 # This applies in any conda environment.
36 36 history = Path(sys.prefix, "conda-meta", "history").read_text()
37 37 match = re.search(
38 38 r"^#\s*cmd:\s*(?P<command>.*conda)\s[create|install]",
39 39 history,
40 40 flags=re.MULTILINE,
41 41 )
42 42 if match:
43 43 return match.groupdict()["command"]
44 44
45 45 # Fallback: assume conda is available on the system path.
46 46 return "conda"
47 47
48 48
49 49 CONDA_COMMANDS_REQUIRING_PREFIX = {
50 50 'install', 'list', 'remove', 'uninstall', 'update', 'upgrade',
51 51 }
52 52 CONDA_COMMANDS_REQUIRING_YES = {
53 53 'install', 'remove', 'uninstall', 'update', 'upgrade',
54 54 }
55 55 CONDA_ENV_FLAGS = {'-p', '--prefix', '-n', '--name'}
56 56 CONDA_YES_FLAGS = {'-y', '--y'}
57 57
58 58
59 59 @magics_class
60 60 class PackagingMagics(Magics):
61 61 """Magics related to packaging & installation"""
62 62
63 63 @line_magic
64 64 def pip(self, line):
65 65 """Run the pip package manager within the current kernel.
66 66
67 67 Usage:
68 68 %pip install [pkgs]
69 69 """
70 70 self.shell.system(' '.join([sys.executable, '-m', 'pip', line]))
71 71 print("Note: you may need to restart the kernel to use updated packages.")
72 72
73 73 @line_magic
74 74 def conda(self, line):
75 75 """Run the conda package manager within the current kernel.
76 76
77 77 Usage:
78 78 %conda install [pkgs]
79 79 """
80 80 if not _is_conda_environment():
81 81 raise ValueError("The python kernel does not appear to be a conda environment. "
82 82 "Please use ``%pip install`` instead.")
83 83
84 84 conda = _get_conda_executable()
85 85 args = shlex.split(line)
86 86 command = args[0]
87 87 args = args[1:]
88 88 extra_args = []
89 89
90 90 # When the subprocess does not allow us to respond "yes" during the installation,
91 91 # we need to insert --yes in the argument list for some commands
92 92 stdin_disabled = getattr(self.shell, 'kernel', None) is not None
93 93 needs_yes = command in CONDA_COMMANDS_REQUIRING_YES
94 94 has_yes = set(args).intersection(CONDA_YES_FLAGS)
95 95 if stdin_disabled and needs_yes and not has_yes:
96 96 extra_args.append("--yes")
97 97
98 98 # Add --prefix to point conda installation to the current environment
99 99 needs_prefix = command in CONDA_COMMANDS_REQUIRING_PREFIX
100 100 has_prefix = set(args).intersection(CONDA_ENV_FLAGS)
101 101 if needs_prefix and not has_prefix:
102 102 extra_args.extend(["--prefix", sys.prefix])
103 103
104 104 self.shell.system(' '.join([conda, command] + extra_args + args))
105 105 print("\nNote: you may need to restart the kernel to use updated packages.")
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