10 examples of 'python check if class has attribute' in Python

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18def check_has_class(elm, name):
19 return name in elm.get_attribute('class')
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33def __check_attribute(ast_node):
34 attribute_name = ast_node.attr
35 if attribute_name not in STRING_AND_LIST_METHODS:
36 return False
37 return True
34def _hasattr(klass, attr):
35 try:
36 return any(attr in superklass.__dict__ for superklass in klass.__mro__)
37 except AttributeError:
38 # Old-style class
39 return hasattr(klass, attr)
114def isclassattr(o):
115 return inspect.isgetsetdescriptor(o) or inspect.ismemberdescriptor(o)
72@classmethod
73def is_a_class_property_getter(cls, attrs):
74 """ Return true if the attributes are for a class property getter. """
75 return any(attr.startswith('Class.Property.Get(') for attr in attrs)
32def has_attributes(*attributes):
33 def test(obj):
34 for each in attributes:
35 if not hasattr(obj, each): return False
36 return True
37 return test
27def _hasattribute(obj, name):
28 try:
29 _getattribute(obj, name)
30 except AttributeError:
31 return False
32 else:
33 return True
293def __subclasscheck__(cls, subcls):
294 if getattr(subcls, "__typed_python_category__", None) != "Class":
295 return False
296
297 if cls is typed_python._types.Class:
298 return True
299
300 return cls in subcls.MRO
64def _hasattr(obj, attr_name):
65 # If possible, avoid retrieving the attribute as the object might run some
66 # lazy computation in it.
67 if attr_name in dir(obj):
68 return True
69 try:
70 getattr(obj, attr_name)
71 except AttributeError:
72 return False
73 else:
74 return True
24def test_hasattr(self):
25 attrs = (
26 "CONTENTSIZE_UNKNOWN",
27 "CONTENTSIZE_ERROR",
28 "COMPRESSION_RECOMMENDED_INPUT_SIZE",
29 "COMPRESSION_RECOMMENDED_OUTPUT_SIZE",
30 "DECOMPRESSION_RECOMMENDED_INPUT_SIZE",
31 "DECOMPRESSION_RECOMMENDED_OUTPUT_SIZE",
32 "MAGIC_NUMBER",
33 "FLUSH_BLOCK",
34 "FLUSH_FRAME",
35 "BLOCKSIZELOG_MAX",
36 "BLOCKSIZE_MAX",
37 "WINDOWLOG_MIN",
38 "WINDOWLOG_MAX",
39 "CHAINLOG_MIN",
40 "CHAINLOG_MAX",
41 "HASHLOG_MIN",
42 "HASHLOG_MAX",
43 "HASHLOG3_MAX",
44 "MINMATCH_MIN",
45 "MINMATCH_MAX",
46 "SEARCHLOG_MIN",
47 "SEARCHLOG_MAX",
48 "SEARCHLENGTH_MIN",
49 "SEARCHLENGTH_MAX",
50 "TARGETLENGTH_MIN",
51 "TARGETLENGTH_MAX",
52 "LDM_MINMATCH_MIN",
53 "LDM_MINMATCH_MAX",
54 "LDM_BUCKETSIZELOG_MAX",
55 "STRATEGY_FAST",
56 "STRATEGY_DFAST",
57 "STRATEGY_GREEDY",
58 "STRATEGY_LAZY",
59 "STRATEGY_LAZY2",
60 "STRATEGY_BTLAZY2",
61 "STRATEGY_BTOPT",
62 "STRATEGY_BTULTRA",
63 "STRATEGY_BTULTRA2",
64 "DICT_TYPE_AUTO",
65 "DICT_TYPE_RAWCONTENT",
66 "DICT_TYPE_FULLDICT",
67 )
68
69 for a in attrs:
70 self.assertTrue(hasattr(zstd, a), a)

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