1""" 

2@file 

3@brief Patches installation 

4 

5.. versionadded:: 1.3 

6""" 

7 

8import os 

9import sys 

10import shutil 

11 

12 

13def fix_python35_dll(path1, path2, force=False): 

14 """ 

15 This function tries to adress a known issue when 

16 creating a virtual environment on Windows with Python 3.5 

17 

18 @param path1 Python installation 

19 @param path2 virtual environment 

20 @param force force the replication even if Python version 3.5 is not true 

21 @return list of copied assemblies 

22 

23 This comes from the following message:: 

24 

25 ERROR: It thinks sys.prefix is 'c:\\jenkins\\pymy\\py35_actuariat_python' 

26 (should be 'c:\\jenkins\\pymy\\py35_actuariat_python\\_virtualenv\\actuariat_python_virpy35_505506092c_505506092c') 

27 ERROR: virtualenv is not compatible with this system or executable 

28 Note: some Windows users have reported this error when they installed Python for "Only this user" 

29 or have multiple versions of Python installed. 

30 Copying the appropriate PythonXX.dll to the virtualenv Scripts/ directory may fix this problem. 

31 """ 

32 if not force and sys.version_info[:2] != (3, 5): 

33 return [] 

34 if os.path.isfile(path1): 

35 path1 = os.path.dirname(path1) 

36 if os.path.isfile(path2): 

37 path2 = os.path.dirname(path2) 

38 paths2s = [path2] 

39 path3 = os.path.join(path2, "Scripts") 

40 if os.path.exists(path3): 

41 paths2s = [path3] 

42 dll = os.listdir(path1) 

43 copy = [] 

44 for f in dll: 

45 ext = os.path.splitext(f)[-1] 

46 if ext == ".dll": 

47 full = os.path.join(path1, f) 

48 for path3 in paths2s: 

49 to = os.path.join(path3, f) 

50 if not os.path.exists(to): 

51 copy.append(to) 

52 shutil.copy(full, path3) 

53 

54 return copy 

55 

56 

57if __name__ == "__main__": 

58 arg = [_ for _ in sys.argv if ".py" not in _] 

59 if len(arg) != 2: 

60 print("Usage: {0} <path_to_python35> <virtual_env>".format( 

61 os.path.split(__file__)[-1])) 

62 else: 

63 fix_python35_dll(*arg)