1import datetime 

2import os 

3import subprocess 

4from collections import namedtuple 

5 

6 

7Version = namedtuple('Version', ['major', 'minor', 'patch', 'pre_release', 'sub']) 

8 

9 

10# Change the version here! 

11# * Use pre_release 'final' and sub 0 for stable 

12# * Use pre_release 'alpha' and sub 0 for development (instead of 'dev') 

13# 

14# Examples: 

15# (0, 1, 0, 'final', 0) -> '0.1.0' 

16# (42, 1, 3, 'final', 0) -> '42.1.3' 

17# (0, 1, 0, 'alpha', 0) -> '0.1.0.dev20170101133742' 

18# (0, 1, 0, 'alpha', 1) -> '0.1.0a1' 

19# (1, 0, 1, 'rc', 0) -> '1.0.1rc0' 

20# (1, 0, 1, 'rc', 2) -> '1.0.1rc2' 

21VERSION = Version(0, 2, 1, 'alpha', 0) 

22 

23 

24def get_version(version): 

25 """Return a PEP 440-compliant version.""" 

26 assert len(version) == 5 

27 assert version[3] in ('alpha', 'beta', 'rc', 'final') 

28 

29 parts = 2 if version[2] == 0 else 3 

30 main = '.'.join([str(p) for p in version[:parts]]) 

31 

32 sub = '' 

33 if version[3] == 'alpha' and version[4] == 0: 33 ↛ 37line 33 didn't jump to line 37, because the condition on line 33 was never false

34 timestamp = get_git_commit_timestamp() 

35 if timestamp: 35 ↛ 41line 35 didn't jump to line 41, because the condition on line 35 was never false

36 sub = '.dev{}'.format(timestamp) 

37 elif version[3] != 'final': 

38 mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'} 

39 sub = mapping[version[3]] + str(version[4]) 

40 

41 return main + sub 

42 

43 

44def get_git_commit_timestamp(): 

45 """ 

46 Return a numeric identifier of the latest git changeset. 

47 

48 The result is the UTC timestamp of the changeset in YYYYMMDDHHMMSS format. 

49 This value isn't guaranteed to be unique, but collisions are very unlikely, 

50 so it's sufficient for generating the development version numbers. 

51 """ 

52 repo_dir = os.path.dirname(os.path.abspath(__file__)) 

53 git_log = subprocess.Popen( 

54 'git log --pretty=format:%ct --quiet -1 HEAD', 

55 stdout=subprocess.PIPE, stderr=subprocess.PIPE, 

56 shell=True, cwd=repo_dir, universal_newlines=True, 

57 ) 

58 timestamp = git_log.communicate()[0] 

59 try: 

60 timestamp = datetime.datetime.utcfromtimestamp(int(timestamp)) 

61 except ValueError: 

62 return None 

63 return timestamp.strftime('%Y%m%d%H%M%S') 

64 

65 

66__version_info__ = VERSION 

67__version__ = get_version(__version_info__)