1#@!#!123s

: / opt / python35 / lib / python3.5 / site-packages / pip / _internal / utils /

Filename : typing.py

back

"""For neatly implementing static typing in pip.

`mypy` - the static type analysis tool we use - uses the `typing` module, which
provides core functionality fundamental to mypy's functioning.

Generally, `typing` would be imported at runtime and used in that fashion -
it acts as a no-op at runtime and does not have any run-time overhead by
design.

As it turns out, `typing` is not vendorable - it uses separate sources for
Python 2/Python 3. Thus, this codebase can not expect it to be present.
To work around this, mypy allows the typing import to be behind a False-y
optional to prevent it from running at runtime and type-comments can be used
to remove the need for the types to be accessible directly during runtime.

This module provides the False-y guard in a nicely named fashion so that a
curious maintainer can reach here to read this.

In pip, all static-typing related imports should be guarded as follows:

    from pip._internal.utils.typing import MYPY_CHECK_RUNNING

    if MYPY_CHECK_RUNNING:
        from typing import ...

Ref: https://github.com/python/mypy/issues/3216
"""

MYPY_CHECK_RUNNING = False


if MYPY_CHECK_RUNNING:
    from typing import cast
else:
    # typing's cast() is needed at runtime, but we don't want to import typing.
    # Thus, we use a dummy no-op version, which we tell mypy to ignore.
    def cast(type_, value):  # type: ignore
        return value

Name	Size	Last Modified	Owner	Permissions
__pycache__	Dir	April 29 2020 6:57:11	root	0755
__init__.py	0 KB	April 29 2020 6:57:10	root	0755
appdirs.py	1.317 KB	April 29 2020 6:57:10	root	0755
compat.py	8.689 KB	April 29 2020 6:57:10	root	0755
compatibility_tags.py	5.363 KB	April 29 2020 6:57:10	root	0755
deprecation.py	3.24 KB	April 29 2020 6:57:10	root	0755
direct_url_helpers.py	4.257 KB	April 29 2020 6:57:10	root	0755
distutils_args.py	1.318 KB	April 29 2020 6:57:10	root	0755
encoding.py	1.289 KB	April 29 2020 6:57:10	root	0755
entrypoints.py	1.125 KB	April 29 2020 6:57:10	root	0755
filesystem.py	5.809 KB	April 29 2020 6:57:10	root	0755
filetypes.py	0.558 KB	April 29 2020 6:57:10	root	0755
glibc.py	3.22 KB	April 29 2020 6:57:10	root	0755
hashes.py	3.893 KB	April 29 2020 6:57:10	root	0755
inject_securetransport.py	0.791 KB	April 29 2020 6:57:10	root	0755
logging.py	12.786 KB	April 29 2020 6:57:10	root	0755
misc.py	25.581 KB	April 29 2020 6:57:10	root	0755
models.py	1.121 KB	April 29 2020 6:57:10	root	0755
packaging.py	2.964 KB	April 29 2020 6:57:10	root	0755
pkg_resources.py	1.225 KB	April 29 2020 6:57:10	root	0755
setuptools_build.py	4.939 KB	April 29 2020 6:57:10	root	0755
subprocess.py	9.67 KB	April 29 2020 6:57:10	root	0755
temp_dir.py	7.993 KB	April 29 2020 6:57:10	root	0755
typing.py	1.368 KB	April 29 2020 6:57:10	root	0755
unpacking.py	9.217 KB	April 29 2020 6:57:10	root	0755
urls.py	1.491 KB	April 29 2020 6:57:10	root	0755
virtualenv.py	3.47 KB	April 29 2020 6:57:10	root	0755
wheel.py	7.135 KB	April 29 2020 6:57:10	root	0755

2017 © D7net \| D704T team