Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/frozenlist/__init__.py: 54%

1import os 

2import sys 

3import types 

4from collections.abc import MutableSequence 

5from functools import total_ordering 

6from typing import Type 

7 

8__version__ = "1.4.0" 

9 

10__all__ = ("FrozenList", "PyFrozenList") # type: Tuple[str, ...] 

11 

12 

13NO_EXTENSIONS = bool(os.environ.get("FROZENLIST_NO_EXTENSIONS")) # type: bool 

14 

15 

16@total_ordering 

17class FrozenList(MutableSequence): 

18 __slots__ = ("_frozen", "_items") 

19 

20 if sys.version_info >= (3, 9): 

21 __class_getitem__ = classmethod(types.GenericAlias) 

22 else: 

23 

24 @classmethod 

25 def __class_getitem__(cls: Type["FrozenList"]) -> Type["FrozenList"]: 

26 return cls 

27 

28 def __init__(self, items=None): 

29 self._frozen = False 

30 if items is not None: 

31 items = list(items) 

32 else: 

33 items = [] 

34 self._items = items 

35 

36 @property 

37 def frozen(self): 

38 return self._frozen 

39 

40 def freeze(self): 

41 self._frozen = True 

42 

43 def __getitem__(self, index): 

44 return self._items[index] 

45 

46 def __setitem__(self, index, value): 

47 if self._frozen: 

48 raise RuntimeError("Cannot modify frozen list.") 

49 self._items[index] = value 

50 

51 def __delitem__(self, index): 

52 if self._frozen: 

53 raise RuntimeError("Cannot modify frozen list.") 

54 del self._items[index] 

55 

56 def __len__(self): 

57 return self._items.__len__() 

58 

59 def __iter__(self): 

60 return self._items.__iter__() 

61 

62 def __reversed__(self): 

63 return self._items.__reversed__() 

64 

65 def __eq__(self, other): 

66 return list(self) == other 

67 

68 def __le__(self, other): 

69 return list(self) <= other 

70 

71 def insert(self, pos, item): 

72 if self._frozen: 

73 raise RuntimeError("Cannot modify frozen list.") 

74 self._items.insert(pos, item) 

75 

76 def __repr__(self): 

77 return f"<FrozenList(frozen={self._frozen}, {self._items!r})>" 

78 

79 def __hash__(self): 

80 if self._frozen: 

81 return hash(tuple(self)) 

82 else: 

83 raise RuntimeError("Cannot hash unfrozen list.") 

84 

85 

86PyFrozenList = FrozenList 

87 

88 

89try: 

90 from ._frozenlist import FrozenList as CFrozenList # type: ignore 

91 

92 if not NO_EXTENSIONS: # pragma: no cover 

93 FrozenList = CFrozenList # type: ignore 

94except ImportError: # pragma: no cover 

95 pass