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annotate lib/python3.8/site-packages/pip/_internal/cli/main.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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1 """Primary application entrypoint.
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2 """
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3 from __future__ import absolute_import
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4
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5 import locale
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6 import logging
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7 import os
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8 import sys
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9
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10 from pip._internal.cli.autocompletion import autocomplete
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11 from pip._internal.cli.main_parser import parse_command
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12 from pip._internal.commands import create_command
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13 from pip._internal.exceptions import PipError
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14 from pip._internal.utils import deprecation
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15 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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16
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17 if MYPY_CHECK_RUNNING:
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18 from typing import List, Optional
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19
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20 logger = logging.getLogger(__name__)
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21
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22
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23 # Do not import and use main() directly! Using it directly is actively
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24 # discouraged by pip's maintainers. The name, location and behavior of
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25 # this function is subject to change, so calling it directly is not
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26 # portable across different pip versions.
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27
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28 # In addition, running pip in-process is unsupported and unsafe. This is
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29 # elaborated in detail at
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30 # https://pip.pypa.io/en/stable/user_guide/#using-pip-from-your-program.
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31 # That document also provides suggestions that should work for nearly
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32 # all users that are considering importing and using main() directly.
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33
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34 # However, we know that certain users will still want to invoke pip
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35 # in-process. If you understand and accept the implications of using pip
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36 # in an unsupported manner, the best approach is to use runpy to avoid
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37 # depending on the exact location of this entry point.
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38
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39 # The following example shows how to use runpy to invoke pip in that
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40 # case:
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41 #
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42 # sys.argv = ["pip", your, args, here]
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43 # runpy.run_module("pip", run_name="__main__")
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44 #
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45 # Note that this will exit the process after running, unlike a direct
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46 # call to main. As it is not safe to do any processing after calling
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47 # main, this should not be an issue in practice.
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48
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49 def main(args=None):
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50 # type: (Optional[List[str]]) -> int
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51 if args is None:
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52 args = sys.argv[1:]
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53
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54 # Configure our deprecation warnings to be sent through loggers
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55 deprecation.install_warning_logger()
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56
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57 autocomplete()
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58
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59 try:
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60 cmd_name, cmd_args = parse_command(args)
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61 except PipError as exc:
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62 sys.stderr.write("ERROR: %s" % exc)
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63 sys.stderr.write(os.linesep)
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64 sys.exit(1)
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65
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66 # Needed for locale.getpreferredencoding(False) to work
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67 # in pip._internal.utils.encoding.auto_decode
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68 try:
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69 locale.setlocale(locale.LC_ALL, '')
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70 except locale.Error as e:
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71 # setlocale can apparently crash if locale are uninitialized
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72 logger.debug("Ignoring error %s when setting locale", e)
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73 command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
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74
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75 return command.main(cmd_args)