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Edit File : __init__.py \| Size : 9.70 KB
import distutils.version import glob import collections import os import os.path import subprocess import sys import sysconfig import tempfile from importlib import resources __all__ = ["version", "bootstrap"] _PACKAGE_NAMES = ('setuptools', 'pip') # Packages bundled in ensurepip._bundled have wheel_name set. # Packages from WHEEL_PKG_DIR have wheel_path set. _Package = collections.namedtuple('Package', ('version', 'wheel_name', 'wheel_path')) # Directory of system wheel packages. Some Linux distribution packaging # policies recommend against bundling dependencies. For example, Fedora # installs wheel packages in the /usr/share/python-wheels/ directory and don't # install the ensurepip._bundled package. _WHEEL_PKG_DIR = "/opt/alt/python310/share/python-wheels/" _wheels = {} def _get_most_recent_wheel_version(pkg): prefix = os.path.join(_WHEEL_PKG_DIR, "{}-".format(pkg)) _wheels[pkg] = {} for suffix in "-py2.py3-none-any.whl", "-py3-none-any.whl": pattern = "{}{}".format(prefix, suffix) for path in glob.glob(pattern): version_str = path[len(prefix):-len(suffix)] _wheels[pkg][version_str] = os.path.basename(path) return str(max(_wheels[pkg], key=distutils.version.LooseVersion)) _SETUPTOOLS_VERSION = _get_most_recent_wheel_version("setuptools") _PIP_VERSION = _get_most_recent_wheel_version("pip") _PROJECTS = [ ("setuptools", _SETUPTOOLS_VERSION, "py3"), ("pip", _PIP_VERSION, "py3"), ] def _find_packages(path): packages = {} try: filenames = os.listdir(path) except OSError: # Ignore: path doesn't exist or permission error filenames = () # Make the code deterministic if a directory contains multiple wheel files # of the same package, but don't attempt to implement correct version # comparison since this case should not happen. filenames = sorted(filenames) for filename in filenames: # filename is like 'pip-21.2.4-py3-none-any.whl' if not filename.endswith(".whl"): continue for name in _PACKAGE_NAMES: prefix = name + '-' if filename.startswith(prefix): break else: continue # Extract '21.2.4' from 'pip-21.2.4-py3-none-any.whl' version = filename.removeprefix(prefix).partition('-')[0] wheel_path = os.path.join(path, filename) packages[name] = _Package(version, None, wheel_path) return packages def _get_packages(): global _PACKAGES, _WHEEL_PKG_DIR if _PACKAGES is not None: return _PACKAGES packages = {} for name, version, py_tag in _PROJECTS: wheel_name = _wheels[name][version] packages[name] = _Package(version, wheel_name, None) if _WHEEL_PKG_DIR: dir_packages = _find_packages(_WHEEL_PKG_DIR) # only used the wheel package directory if all packages are found there if all(name in dir_packages for name in _PACKAGE_NAMES): packages = dir_packages _PACKAGES = packages return packages _PACKAGES = None def _run_pip(args, additional_paths=None): # Run the bootstraping in a subprocess to avoid leaking any state that happens # after pip has executed. Particulary, this avoids the case when pip holds onto # the files in additional_paths, preventing us to remove them at the end of the # invocation. code = f""" import runpy import sys sys.path = {additional_paths or []} + sys.path sys.argv[1:] = {args} runpy.run_module("pip", run_name="__main__", alter_sys=True) """ cmd = [ sys.executable, '-W', 'ignore::DeprecationWarning', '-c', code, ] if sys.flags.isolated: # run code in isolated mode if currently running isolated cmd.insert(1, '-I') return subprocess.run(cmd, check=True).returncode def version(): """ Returns a string specifying the bundled version of pip. """ return _get_packages()['pip'].version def _disable_pip_configuration_settings(): # We deliberately ignore all pip environment variables # when invoking pip # See http://bugs.python.org/issue19734 for details keys_to_remove = [k for k in os.environ if k.startswith("PIP_")] for k in keys_to_remove: del os.environ[k] # We also ignore the settings in the default pip configuration file # See http://bugs.python.org/issue20053 for details os.environ['PIP_CONFIG_FILE'] = os.devnull def bootstrap(, root=None, upgrade=False, user=False, altinstall=False, default_pip=False, verbosity=0): """ Bootstrap pip into the current Python installation (or the given root directory). Note that calling this function will alter both sys.path and os.environ. """ # Discard the return value _bootstrap(root=root, upgrade=upgrade, user=user, altinstall=altinstall, default_pip=default_pip, verbosity=verbosity) def _bootstrap(, root=None, upgrade=False, user=False, altinstall=False, default_pip=False, verbosity=0): """ Bootstrap pip into the current Python installation (or the given root directory). Returns pip command status code. Note that calling this function will alter both sys.path and os.environ. """ if altinstall and default_pip: raise ValueError("Cannot use altinstall and default_pip together") sys.audit("ensurepip.bootstrap", root) _disable_pip_configuration_settings() # By default, installing pip and setuptools installs all of the # following scripts (X.Y == running Python version): # # pip, pipX, pipX.Y, easy_install, easy_install-X.Y # # pip 1.5+ allows ensurepip to request that some of those be left out if altinstall: # omit pip, pipX and easy_install os.environ["ENSUREPIP_OPTIONS"] = "altinstall" elif not default_pip: # omit pip and easy_install os.environ["ENSUREPIP_OPTIONS"] = "install" with tempfile.TemporaryDirectory() as tmpdir: # Put our bundled wheels into a temporary directory and construct the # additional paths that need added to sys.path additional_paths = [] for project, version, py_tag in _PROJECTS: wheel_name = _wheels[project][version] filename_wheel = os.path.join(_WHEEL_PKG_DIR, wheel_name) filename_tmp = os.path.join(tmpdir, wheel_name) with open(filename_wheel, "rb") as sfp: with open(filename_tmp, "wb") as fp: fp.write(sfp.read()) additional_paths.append(filename_tmp) # Construct the arguments to be passed to the pip command args = ["install", "--no-cache-dir", "--no-index", "--find-links", tmpdir] if root: args += ["--root", root] if upgrade: args += ["--upgrade"] if user: args += ["--user"] if verbosity: args += ["-" + "v" verbosity] return _run_pip([args, _PACKAGE_NAMES], additional_paths) def _uninstall_helper(, verbosity=0): """Helper to support a clean default uninstall process on Windows Note that calling this function may alter os.environ. """ # Nothing to do if pip was never installed, or has been removed try: import pip except ImportError: return # If the installed pip version doesn't match the available one, # leave it alone available_version = version() if pip.__version__ != available_version: print(f"ensurepip will only uninstall a matching version " f"({pip.__version__!r} installed, " f"{available_version!r} available)", file=sys.stderr) return _disable_pip_configuration_settings() # Construct the arguments to be passed to the pip command args = ["uninstall", "-y", "--disable-pip-version-check"] if verbosity: args += ["-" + "v" verbosity] return _run_pip([args, reversed(_PACKAGE_NAMES)]) def _main(argv=None): import argparse parser = argparse.ArgumentParser(prog="python -m ensurepip") parser.add_argument( "--version", action="version", version="pip {}".format(version()), help="Show the version of pip that is bundled with this Python.", ) parser.add_argument( "-v", "--verbose", action="count", default=0, dest="verbosity", help=("Give more output. Option is additive, and can be used up to 3 " "times."), ) parser.add_argument( "-U", "--upgrade", action="store_true", default=False, help="Upgrade pip and dependencies, even if already installed.", ) parser.add_argument( "--user", action="store_true", default=False, help="Install using the user scheme.", ) parser.add_argument( "--root", default=None, help="Install everything relative to this alternate root directory.", ) parser.add_argument( "--altinstall", action="store_true", default=False, help=("Make an alternate install, installing only the X.Y versioned " "scripts (Default: pipX, pipX.Y, easy_install-X.Y)."), ) parser.add_argument( "--default-pip", action="store_true", default=False, help=("Make a default pip install, installing the unqualified pip " "and easy_install in addition to the versioned scripts."), ) args = parser.parse_args(argv) return _bootstrap( root=args.root, upgrade=args.upgrade, user=args.user, verbosity=args.verbosity, altinstall=args.altinstall, default_pip=args.default_pip, ) Back

Edit File : __init__.py | Size : 9.70 KB

import distutils.version
import glob
import collections
import os
import os.path
import subprocess
import sys
import sysconfig
import tempfile
from importlib import resources

__all__ = ["version", "bootstrap"]

_PACKAGE_NAMES = ('setuptools', 'pip')

# Packages bundled in ensurepip._bundled have wheel_name set.
# Packages from WHEEL_PKG_DIR have wheel_path set.
_Package = collections.namedtuple('Package',
                                  ('version', 'wheel_name', 'wheel_path'))

# Directory of system wheel packages. Some Linux distribution packaging
# policies recommend against bundling dependencies. For example, Fedora
# installs wheel packages in the /usr/share/python-wheels/ directory and don't
# install the ensurepip._bundled package.
_WHEEL_PKG_DIR = "/opt/alt/python310/share/python-wheels/"

_wheels = {}

def _get_most_recent_wheel_version(pkg):
    prefix = os.path.join(_WHEEL_PKG_DIR, "{}-".format(pkg))
    _wheels[pkg] = {}
    for suffix in "-py2.py3-none-any.whl", "-py3-none-any.whl":
        pattern = "{}*{}".format(prefix, suffix)
        for path in glob.glob(pattern):
            version_str = path[len(prefix):-len(suffix)]
            _wheels[pkg][version_str] = os.path.basename(path)
    return str(max(_wheels[pkg], key=distutils.version.LooseVersion))

_SETUPTOOLS_VERSION = _get_most_recent_wheel_version("setuptools")
_PIP_VERSION = _get_most_recent_wheel_version("pip")
_PROJECTS = [
    ("setuptools", _SETUPTOOLS_VERSION, "py3"),
    ("pip", _PIP_VERSION, "py3"),
]

def _find_packages(path):
    packages = {}
    try:
        filenames = os.listdir(path)
    except OSError:
        # Ignore: path doesn't exist or permission error
        filenames = ()
    # Make the code deterministic if a directory contains multiple wheel files
    # of the same package, but don't attempt to implement correct version
    # comparison since this case should not happen.
    filenames = sorted(filenames)
    for filename in filenames:
        # filename is like 'pip-21.2.4-py3-none-any.whl'
        if not filename.endswith(".whl"):
            continue
        for name in _PACKAGE_NAMES:
            prefix = name + '-'
            if filename.startswith(prefix):
                break
        else:
            continue

# Extract '21.2.4' from 'pip-21.2.4-py3-none-any.whl'
        version = filename.removeprefix(prefix).partition('-')[0]
        wheel_path = os.path.join(path, filename)
        packages[name] = _Package(version, None, wheel_path)
    return packages

def _get_packages():
    global _PACKAGES, _WHEEL_PKG_DIR
    if _PACKAGES is not None:
        return _PACKAGES

packages = {}
    for name, version, py_tag in _PROJECTS:
        wheel_name =  _wheels[name][version]
        packages[name] = _Package(version, wheel_name, None)
    if _WHEEL_PKG_DIR:
        dir_packages = _find_packages(_WHEEL_PKG_DIR)
        # only used the wheel package directory if all packages are found there
        if all(name in dir_packages for name in _PACKAGE_NAMES):
            packages = dir_packages
    _PACKAGES = packages
    return packages
_PACKAGES = None

def _run_pip(args, additional_paths=None):
    # Run the bootstraping in a subprocess to avoid leaking any state that happens
    # after pip has executed. Particulary, this avoids the case when pip holds onto
    # the files in *additional_paths*, preventing us to remove them at the end of the
    # invocation.
    code = f"""
import runpy
import sys
sys.path = {additional_paths or []} + sys.path
sys.argv[1:] = {args}
runpy.run_module("pip", run_name="__main__", alter_sys=True)
"""

cmd = [
        sys.executable,
        '-W',
        'ignore::DeprecationWarning',
        '-c',
        code,
    ]
    if sys.flags.isolated:
        # run code in isolated mode if currently running isolated
        cmd.insert(1, '-I')
    return subprocess.run(cmd, check=True).returncode

def version():
    """
    Returns a string specifying the bundled version of pip.
    """
    return _get_packages()['pip'].version

def _disable_pip_configuration_settings():
    # We deliberately ignore all pip environment variables
    # when invoking pip
    # See http://bugs.python.org/issue19734 for details
    keys_to_remove = [k for k in os.environ if k.startswith("PIP_")]
    for k in keys_to_remove:
        del os.environ[k]
    # We also ignore the settings in the default pip configuration file
    # See http://bugs.python.org/issue20053 for details
    os.environ['PIP_CONFIG_FILE'] = os.devnull

def bootstrap(*, root=None, upgrade=False, user=False,
              altinstall=False, default_pip=False,
              verbosity=0):
    """
    Bootstrap pip into the current Python installation (or the given root
    directory).

Note that calling this function will alter both sys.path and os.environ.
    """
    # Discard the return value
    _bootstrap(root=root, upgrade=upgrade, user=user,
               altinstall=altinstall, default_pip=default_pip,
               verbosity=verbosity)

def _bootstrap(*, root=None, upgrade=False, user=False,
              altinstall=False, default_pip=False,
              verbosity=0):
    """
    Bootstrap pip into the current Python installation (or the given root
    directory). Returns pip command status code.

Note that calling this function will alter both sys.path and os.environ.
    """
    if altinstall and default_pip:
        raise ValueError("Cannot use altinstall and default_pip together")

sys.audit("ensurepip.bootstrap", root)

_disable_pip_configuration_settings()

# By default, installing pip and setuptools installs all of the
    # following scripts (X.Y == running Python version):
    #
    #   pip, pipX, pipX.Y, easy_install, easy_install-X.Y
    #
    # pip 1.5+ allows ensurepip to request that some of those be left out
    if altinstall:
        # omit pip, pipX and easy_install
        os.environ["ENSUREPIP_OPTIONS"] = "altinstall"
    elif not default_pip:
        # omit pip and easy_install
        os.environ["ENSUREPIP_OPTIONS"] = "install"

with tempfile.TemporaryDirectory() as tmpdir:
        # Put our bundled wheels into a temporary directory and construct the
        # additional paths that need added to sys.path
        additional_paths = []
        for project, version, py_tag in _PROJECTS:
            wheel_name = _wheels[project][version]
            filename_wheel = os.path.join(_WHEEL_PKG_DIR, wheel_name)
            filename_tmp = os.path.join(tmpdir, wheel_name)
            with open(filename_wheel, "rb") as sfp:
                with open(filename_tmp, "wb") as fp:
                    fp.write(sfp.read())

additional_paths.append(filename_tmp)

# Construct the arguments to be passed to the pip command
        args = ["install", "--no-cache-dir", "--no-index", "--find-links", tmpdir]
        if root:
            args += ["--root", root]
        if upgrade:
            args += ["--upgrade"]
        if user:
            args += ["--user"]
        if verbosity:
            args += ["-" + "v" * verbosity]

return _run_pip([*args, *_PACKAGE_NAMES], additional_paths)

def _uninstall_helper(*, verbosity=0):
    """Helper to support a clean default uninstall process on Windows

Note that calling this function may alter os.environ.
    """
    # Nothing to do if pip was never installed, or has been removed
    try:
        import pip
    except ImportError:
        return

# If the installed pip version doesn't match the available one,
    # leave it alone
    available_version = version()
    if pip.__version__ != available_version:
        print(f"ensurepip will only uninstall a matching version "
              f"({pip.__version__!r} installed, "
              f"{available_version!r} available)",
              file=sys.stderr)
        return

_disable_pip_configuration_settings()

# Construct the arguments to be passed to the pip command
    args = ["uninstall", "-y", "--disable-pip-version-check"]
    if verbosity:
        args += ["-" + "v" * verbosity]

return _run_pip([*args, *reversed(_PACKAGE_NAMES)])

def _main(argv=None):
    import argparse
    parser = argparse.ArgumentParser(prog="python -m ensurepip")
    parser.add_argument(
        "--version",
        action="version",
        version="pip {}".format(version()),
        help="Show the version of pip that is bundled with this Python.",
    )
    parser.add_argument(
        "-v", "--verbose",
        action="count",
        default=0,
        dest="verbosity",
        help=("Give more output. Option is additive, and can be used up to 3 "
              "times."),
    )
    parser.add_argument(
        "-U", "--upgrade",
        action="store_true",
        default=False,
        help="Upgrade pip and dependencies, even if already installed.",
    )
    parser.add_argument(
        "--user",
        action="store_true",
        default=False,
        help="Install using the user scheme.",
    )
    parser.add_argument(
        "--root",
        default=None,
        help="Install everything relative to this alternate root directory.",
    )
    parser.add_argument(
        "--altinstall",
        action="store_true",
        default=False,
        help=("Make an alternate install, installing only the X.Y versioned "
              "scripts (Default: pipX, pipX.Y, easy_install-X.Y)."),
    )
    parser.add_argument(
        "--default-pip",
        action="store_true",
        default=False,
        help=("Make a default pip install, installing the unqualified pip "
              "and easy_install in addition to the versioned scripts."),
    )

args = parser.parse_args(argv)

return _bootstrap(
        root=args.root,
        upgrade=args.upgrade,
        user=args.user,
        verbosity=args.verbosity,
        altinstall=args.altinstall,
        default_pip=args.default_pip,
    )

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