64 lines
1.7 KiB
Python
64 lines
1.7 KiB
Python
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import inspect
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def get_func_args(func):
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sig = inspect.signature(func)
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return [
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arg_name for arg_name, param in sig.parameters.items()
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if param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD
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]
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def get_func_full_args(func):
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"""
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Return a list of (argument name, default value) tuples. If the argument
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does not have a default value, omit it in the tuple. Arguments such as
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*args and **kwargs are also included.
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"""
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sig = inspect.signature(func)
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args = []
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for arg_name, param in sig.parameters.items():
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name = arg_name
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# Ignore 'self'
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if name == 'self':
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continue
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if param.kind == inspect.Parameter.VAR_POSITIONAL:
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name = '*' + name
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elif param.kind == inspect.Parameter.VAR_KEYWORD:
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name = '**' + name
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if param.default != inspect.Parameter.empty:
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args.append((name, param.default))
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else:
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args.append((name,))
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return args
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def func_accepts_kwargs(func):
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return any(
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p for p in inspect.signature(func).parameters.values()
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if p.kind == p.VAR_KEYWORD
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)
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def func_accepts_var_args(func):
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"""
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Return True if function 'func' accepts positional arguments *args.
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"""
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return any(
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p for p in inspect.signature(func).parameters.values()
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if p.kind == p.VAR_POSITIONAL
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)
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def method_has_no_args(meth):
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"""Return True if a method only accepts 'self'."""
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count = len([
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p for p in inspect.signature(meth).parameters.values()
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if p.kind == p.POSITIONAL_OR_KEYWORD
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])
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return count == 0 if inspect.ismethod(meth) else count == 1
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def func_supports_parameter(func, parameter):
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return parameter in inspect.signature(func).parameters
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