Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/tensorflow/python/util/function_utils.py: 25%

1# Copyright 2018 The TensorFlow Authors. All Rights Reserved. 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# http://www.apache.org/licenses/LICENSE-2.0 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14# ============================================================================== 

15"""Utility to retrieve function args.""" 

16 

17import functools 

18 

19import six 

20 

21from tensorflow.core.protobuf import config_pb2 

22from tensorflow.python.util import tf_decorator 

23from tensorflow.python.util import tf_inspect 

24 

25 

26def _is_bound_method(fn): 

27 _, fn = tf_decorator.unwrap(fn) 

28 return tf_inspect.ismethod(fn) and (fn.__self__ is not None) 

29 

30 

31def _is_callable_object(obj): 

32 return hasattr(obj, '__call__') and tf_inspect.ismethod(obj.__call__) 

33 

34 

35def fn_args(fn): 

36 """Get argument names for function-like object. 

37 

38 Args: 

39 fn: Function, or function-like object (e.g., result of `functools.partial`). 

40 

41 Returns: 

42 `tuple` of string argument names. 

43 

44 Raises: 

45 ValueError: if partial function has positionally bound arguments 

46 """ 

47 if isinstance(fn, functools.partial): 

48 args = fn_args(fn.func) 

49 args = [a for a in args[len(fn.args):] if a not in (fn.keywords or [])] 

50 else: 

51 if _is_callable_object(fn): 

52 fn = fn.__call__ 

53 args = tf_inspect.getfullargspec(fn).args 

54 if _is_bound_method(fn) and args: 

55 # If it's a bound method, it may or may not have a self/cls first 

56 # argument; for example, self could be captured in *args. 

57 # If it does have a positional argument, it is self/cls. 

58 args.pop(0) 

59 return tuple(args) 

60 

61 

62def has_kwargs(fn): 

63 """Returns whether the passed callable has **kwargs in its signature. 

64 

65 Args: 

66 fn: Function, or function-like object (e.g., result of `functools.partial`). 

67 

68 Returns: 

69 `bool`: if `fn` has **kwargs in its signature. 

70 

71 Raises: 

72 `TypeError`: If fn is not a Function, or function-like object. 

73 """ 

74 if isinstance(fn, functools.partial): 

75 fn = fn.func 

76 elif _is_callable_object(fn): 

77 fn = fn.__call__ 

78 elif not callable(fn): 

79 raise TypeError( 

80 'Argument `fn` should be a callable. ' 

81 f'Received: fn={fn} (of type {type(fn)})') 

82 return tf_inspect.getfullargspec(fn).varkw is not None 

83 

84 

85def get_func_name(func): 

86 """Returns name of passed callable.""" 

87 _, func = tf_decorator.unwrap(func) 

88 if callable(func): 

89 if tf_inspect.isfunction(func): 

90 return func.__name__ 

91 elif tf_inspect.ismethod(func): 

92 return '%s.%s' % (six.get_method_self(func).__class__.__name__, 

93 six.get_method_function(func).__name__) 

94 else: # Probably a class instance with __call__ 

95 return str(type(func)) 

96 else: 

97 raise ValueError( 

98 'Argument `func` must be a callable. ' 

99 f'Received func={func} (of type {type(func)})') 

100 

101 

102def get_func_code(func): 

103 """Returns func_code of passed callable, or None if not available.""" 

104 _, func = tf_decorator.unwrap(func) 

105 if callable(func): 

106 if tf_inspect.isfunction(func) or tf_inspect.ismethod(func): 

107 return six.get_function_code(func) 

108 # Since the object is not a function or method, but is a callable, we will 

109 # try to access the __call__method as a function. This works with callable 

110 # classes but fails with functool.partial objects despite their __call__ 

111 # attribute. 

112 try: 

113 return six.get_function_code(func.__call__) 

114 except AttributeError: 

115 return None 

116 else: 

117 raise ValueError( 

118 'Argument `func` must be a callable. ' 

119 f'Received func={func} (of type {type(func)})') 

120 

121 

122_rewriter_config_optimizer_disabled = None 

123 

124 

125def get_disabled_rewriter_config(): 

126 global _rewriter_config_optimizer_disabled 

127 if _rewriter_config_optimizer_disabled is None: 

128 config = config_pb2.ConfigProto() 

129 rewriter_config = config.graph_options.rewrite_options 

130 rewriter_config.disable_meta_optimizer = True 

131 _rewriter_config_optimizer_disabled = config.SerializeToString() 

132 return _rewriter_config_optimizer_disabled