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