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""" import pkg_resources try: dist = pkg_resources.get_distribution('pip') return (dist.has_metadata('INSTALLER') and 'pip' in dist.get_metadata_lines('INSTALLER')) except pkg_resources.DistributionNotFound: return False def pip_version_check(session): """Check for an update for pip. Limit the frequency of checks to once per week. State is stored either in the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix of the pip script path. """ installed_version = get_installed_version("pip") if installed_version is None: return pip_version = packaging_version.parse(installed_version) pypi_version = None try: state = load_selfcheck_statefile() current_time = datetime.datetime.utcnow() # Determine if we need to refresh the state if "last_check" in state.state and "pypi_version" in state.state: last_check = datetime.datetime.strptime( state.state["last_check"], SELFCHECK_DATE_FMT ) if total_seconds(current_time - last_check) < 7 * 24 * 60 * 60: pypi_version = state.state["pypi_version"] # Refresh the version if we need to or just see if we need to warn if pypi_version is None: resp = session.get( PyPI.pip_json_url, headers={"Accept": "application/json"}, ) resp.raise_for_status() pypi_version = [ v for v in sorted( list(resp.json()["releases"]), key=packaging_version.parse, ) if not packaging_version.parse(v).is_prerelease ][-1] # save that we've performed a check state.save(pypi_version, current_time) remote_version = packaging_version.parse(pypi_version) # Determine if our pypi_version is older if (pip_version < remote_version and pip_version.base_version != remote_version.base_version and pip_installed_by_pip()): # Advise "python -m pip" on Windows to avoid issues # with overwriting pip.exe. if WINDOWS: pip_cmd = "python -m pip" else: pip_cmd = "pip" logger.warning( "You are using pip version %s, however version %s is " "available.\nYou should consider upgrading via the " "'%s install --upgrade pip' command.", pip_version, pypi_version, pip_cmd ) except Exception: logger.debug( "There was an error checking the latest version of pip", exc_info=True, )