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Python modules For the system python are usually handled by dpkg and apt-get. apt-get install python- Install the python-pip package to use pip itself. Using pip together with the system python might have unexpected results for any system installed module, so use it on your own risk, or make sure to only use it in virtual environments. ''') sys.exit(1) _PROJECTS = [ ("setuptools"), ("pip"), ] def _run_pip(args, additional_paths=None): # Add our bundled software to the sys.path so we can import it if additional_paths is not None: sys.path = additional_paths + sys.path # Install the bundled software import pip._internal return pip._internal.main(args) def version(): """ Returns a string specifying the bundled version of pip. """ _ensurepip_is_disabled_in_debian() whl_name = 'pip' wheel_names = glob.glob('/usr/share/python-wheels/%s-*.whl' % whl_name) if len(wheel_names) == 1: return os.path.basename(wheel_names[0]).split('-')[1] raise RuntimeError('missing dependency wheel %s. Installation of the python-%s-whl package is needed to use ensurepip.' % (whl_name, whl_name)) 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=True, 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=True, 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. """ _ensurepip_is_disabled_in_debian() if altinstall and default_pip: raise ValueError("Cannot use altinstall and default_pip together") _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" # Debian: The bundled wheels are useless to us because we must use ones # crafted from source code in the archive. As we build the virtual # environment, copy the wheels from the system location into the virtual # environment, and place those wheels on sys.path. def copy_wheels(wheels, destdir, paths): for project in wheels: wheel_names = glob.glob( '/usr/share/python-wheels/{}-*.whl'.format(project)) if len(wheel_names) == 0: raise RuntimeError('missing dependency wheel %s. Installation of the python-%s-whl package is needed to use ensurepip.' % (project, project)) assert len(wheel_names) == 1, wheel_names wheel_name = os.path.basename(wheel_names[0]) path = os.path.join('/usr/share/python-wheels', wheel_name) with open(path, 'rb') as fp: whl = fp.read() dest = os.path.join(destdir, wheel_name) with open(dest, 'wb') as fp: fp.write(whl) paths.append(dest) # check that the python-{pip,setuptools}-whl packages are installed missing = [] for project in reversed(_PROJECTS): wheel_names = glob.glob('/usr/share/python-wheels/%s-*.whl' % project) if len(wheel_names) != 1: missing.append(project) if missing: raise RuntimeError('missing wheel(s) %s. Installation of the %s package(s) is needed to use ensurepip.' \ % (', '.join([missing]), ', '.join(['python-%s-whl' % m for m in missing])) \ ) tmpdir = tempfile.mkdtemp() for project in _PROJECTS: try: with open('/usr/share/python-wheels/%s.dependencies' % project) as fp: dependencies = [line[:-1].split()[0] for line in fp.readlines()] except IOError: dependencies = [] copy_wheels(dependencies, tmpdir, sys.path) try: # Put our bundled wheels into a temporary directory and construct the # additional paths that need added to sys.path additional_paths = [] copy_wheels(_PROJECTS, tmpdir, additional_paths) # Construct the arguments to be passed to the pip command args = ["install", "--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 + _PROJECTS, additional_paths) finally: shutil.rmtree(tmpdir, ignore_errors=True) 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 pip version doesn't match the bundled one, leave it alone # Disabled for Debian, always using the version from the python3-pip package. if False and pip.__version__ != _PIP_VERSION: msg = ("ensurepip will only uninstall a matching version " "({!r} installed, {!r} bundled)") print(msg.format(pip.__version__, _PIP_VERSION), 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(_PROJECTS)) 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=True, dest="default_pip", help=argparse.SUPPRESS, ) parser.add_argument( "--no-default-pip", action="store_false", dest="default_pip", help=("Make a non default install, installing only the X and X.Y " "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, )