Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pip/_internal/locations/base.py: 62%

1import functools 

2import os 

3import site 

4import sys 

5import sysconfig 

6import typing 

7 

8from pip._internal.exceptions import InstallationError 

9from pip._internal.utils import appdirs 

10from pip._internal.utils.virtualenv import running_under_virtualenv 

11 

12# Application Directories 

13USER_CACHE_DIR = appdirs.user_cache_dir("pip") 

14 

15# FIXME doesn't account for venv linked to global site-packages 

16site_packages: str = sysconfig.get_path("purelib") 

17 

18 

19def get_major_minor_version() -> str: 

20 """ 

21 Return the major-minor version of the current Python as a string, e.g. 

22 "3.7" or "3.10". 

23 """ 

24 return "{}.{}".format(*sys.version_info) 

25 

26 

27def change_root(new_root: str, pathname: str) -> str: 

28 """Return 'pathname' with 'new_root' prepended. 

29 

30 If 'pathname' is relative, this is equivalent to os.path.join(new_root, pathname). 

31 Otherwise, it requires making 'pathname' relative and then joining the 

32 two, which is tricky on DOS/Windows and Mac OS. 

33 

34 This is borrowed from Python's standard library's distutils module. 

35 """ 

36 if os.name == "posix": 

37 if not os.path.isabs(pathname): 

38 return os.path.join(new_root, pathname) 

39 else: 

40 return os.path.join(new_root, pathname[1:]) 

41 

42 elif os.name == "nt": 

43 (drive, path) = os.path.splitdrive(pathname) 

44 if path[0] == "\\": 

45 path = path[1:] 

46 return os.path.join(new_root, path) 

47 

48 else: 

49 raise InstallationError( 

50 f"Unknown platform: {os.name}\n" 

51 "Can not change root path prefix on unknown platform." 

52 ) 

53 

54 

55def get_src_prefix() -> str: 

56 if running_under_virtualenv(): 

57 src_prefix = os.path.join(sys.prefix, "src") 

58 else: 

59 # FIXME: keep src in cwd for now (it is not a temporary folder) 

60 try: 

61 src_prefix = os.path.join(os.getcwd(), "src") 

62 except OSError: 

63 # In case the current working directory has been renamed or deleted 

64 sys.exit("The folder you are executing pip from can no longer be found.") 

65 

66 # under macOS + virtualenv sys.prefix is not properly resolved 

67 # it is something like /path/to/python/bin/.. 

68 return os.path.abspath(src_prefix) 

69 

70 

71try: 

72 # Use getusersitepackages if this is present, as it ensures that the 

73 # value is initialised properly. 

74 user_site: typing.Optional[str] = site.getusersitepackages() 

75except AttributeError: 

76 user_site = site.USER_SITE 

77 

78 

79@functools.lru_cache(maxsize=None) 

80def is_osx_framework() -> bool: 

81 return bool(sysconfig.get_config_var("PYTHONFRAMEWORK"))