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import datetime import functools import os import subprocess import sys from distutils.version import LooseVersion # Private, stable API for detecting the Python version. PYXY means "Python X.Y # or later". So that third-party apps can use these values, each constant # should remain as long as the oldest supported Django version supports that # Python version. PY36 = sys.version_info >= (3, 6) PY37 = sys.version_info >= (3, 7) PY38 = sys.version_info >= (3, 8) PY39 = sys.version_info >= (3, 9) def get_version(version=None): """Return a PEP 440-compliant version number from VERSION.""" version = get_complete_version(version) # Now build the two parts of the version number: # main = X.Y[.Z] # sub = .devN - for pre-alpha releases # | {a|b|rc}N - for alpha, beta, and rc releases main = get_main_version(version) sub = '' if version[3] == 'alpha' and version[4] == 0: git_changeset = get_git_changeset() if git_changeset: sub = '.dev%s' % git_changeset elif version[3] != 'final': mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'} sub = mapping[version[3]] + str(version[4]) return main + sub def get_main_version(version=None): """Return main version (X.Y[.Z]) from VERSION.""" version = get_complete_version(version) parts = 2 if version[2] == 0 else 3 return '.'.join(str(x) for x in version[:parts]) def get_complete_version(version=None): """ Return a tuple of the django version. If version argument is non-empty, check for correctness of the tuple provided. """ if version is None: from django import VERSION as version else: assert len(version) == 5 assert version[3] in ('alpha', 'beta', 'rc', 'final') return version def get_docs_version(version=None): version = get_complete_version(version) if version[3] != 'final': return 'dev' else: return '%d.%d' % version[:2] @functools.lru_cache() def get_git_changeset(): """Return a numeric identifier of the latest git changeset. The result is the UTC timestamp of the changeset in YYYYMMDDHHMMSS format. This value isn't guaranteed to be unique, but collisions are very unlikely, so it's sufficient for generating the development version numbers. """ repo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) git_log = subprocess.Popen( 'git log --pretty=format:%ct --quiet -1 HEAD', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True, cwd=repo_dir, universal_newlines=True, ) timestamp = git_log.communicate()[0] try: timestamp = datetime.datetime.utcfromtimestamp(int(timestamp)) except ValueError: return None return timestamp.strftime('%Y%m%d%H%M%S') def get_version_tuple(version): """ Return a tuple of version numbers (e.g. (1, 2, 3)) from the version string (e.g. '1.2.3'). """ loose_version = LooseVersion(version) version_numbers = [] for item in loose_version.version: if not isinstance(item, int): break version_numbers.append(item) return tuple(version_numbers)