Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/requests/structures.py: 51%

1""" 

2requests.structures 

3~~~~~~~~~~~~~~~~~~~ 

4 

5Data structures that power Requests. 

6""" 

7 

8from collections import OrderedDict 

9 

10from .compat import Mapping, MutableMapping 

11 

12 

13class CaseInsensitiveDict(MutableMapping): 

14 """A case-insensitive ``dict``-like object. 

15 

16 Implements all methods and operations of 

17 ``MutableMapping`` as well as dict's ``copy``. Also 

18 provides ``lower_items``. 

19 

20 All keys are expected to be strings. The structure remembers the 

21 case of the last key to be set, and ``iter(instance)``, 

22 ``keys()``, ``items()``, ``iterkeys()``, and ``iteritems()`` 

23 will contain case-sensitive keys. However, querying and contains 

24 testing is case insensitive:: 

25 

26 cid = CaseInsensitiveDict() 

27 cid['Accept'] = 'application/json' 

28 cid['aCCEPT'] == 'application/json' # True 

29 list(cid) == ['Accept'] # True 

30 

31 For example, ``headers['content-encoding']`` will return the 

32 value of a ``'Content-Encoding'`` response header, regardless 

33 of how the header name was originally stored. 

34 

35 If the constructor, ``.update``, or equality comparison 

36 operations are given keys that have equal ``.lower()``s, the 

37 behavior is undefined. 

38 """ 

39 

40 def __init__(self, data=None, **kwargs): 

41 self._store = OrderedDict() 

42 if data is None: 

43 data = {} 

44 self.update(data, **kwargs) 

45 

46 def __setitem__(self, key, value): 

47 # Use the lowercased key for lookups, but store the actual 

48 # key alongside the value. 

49 self._store[key.lower()] = (key, value) 

50 

51 def __getitem__(self, key): 

52 return self._store[key.lower()][1] 

53 

54 def __delitem__(self, key): 

55 del self._store[key.lower()] 

56 

57 def __iter__(self): 

58 return (casedkey for casedkey, mappedvalue in self._store.values()) 

59 

60 def __len__(self): 

61 return len(self._store) 

62 

63 def lower_items(self): 

64 """Like iteritems(), but with all lowercase keys.""" 

65 return ((lowerkey, keyval[1]) for (lowerkey, keyval) in self._store.items()) 

66 

67 def __eq__(self, other): 

68 if isinstance(other, Mapping): 

69 other = CaseInsensitiveDict(other) 

70 else: 

71 return NotImplemented 

72 # Compare insensitively 

73 return dict(self.lower_items()) == dict(other.lower_items()) 

74 

75 # Copy is required 

76 def copy(self): 

77 return CaseInsensitiveDict(self._store.values()) 

78 

79 def __repr__(self): 

80 return str(dict(self.items())) 

81 

82 

83class LookupDict(dict): 

84 """Dictionary lookup object.""" 

85 

86 def __init__(self, name=None): 

87 self.name = name 

88 super().__init__() 

89 

90 def __repr__(self): 

91 return f"<lookup '{self.name}'>" 

92 

93 def __getitem__(self, key): 

94 # We allow fall-through here, so values default to None 

95 

96 return self.__dict__.get(key, None) 

97 

98 def get(self, key, default=None): 

99 return self.__dict__.get(key, default)