Inspect

Utils for inspecting functions.

pydu.inspect.getargspec(func)

Get the names and default values of a function’s arguments.

A tuple of four things is returned: (args, varargs, varkw, defaults). args is a list of the argument names (it may contain nested lists). varargs and varkw are the names of the * and ** arguments or None. defaults is an n-tuple of the default values of the last n arguments.

>>> from pydu.inspect import getargspec
>>> def f(name, address='home', age=25, *args, **kwargs):
...     pass
...
>>> getargspect(f)
ArgSpec(args=['name', 'address', 'age'], varargs='args', keywords='kwargs', defaults=('home', 25))

pydu.inspect.get_func_args(func)

Return a list of the argument names. Arguments such as *args and **kwargs are not included.

>>> from pydu.inspect import get_func_args
>>> def f(name, address='home', age=25, *args, **kwargs):
...     pass
...
>>> get_func_args(f)
['name', 'address', 'age']

pydu.inspect.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.

>>> from pydu.inspect import get_func_full_args
>>> def f(name, address='home', age=25, *args, **kwargs):
...     pass
...
>>> get_func_full_args(f)
[('name',), ('address', 'home'), ('age', 25), ('*args',), ('**kwargs',)]

pydu.inspect.func_accepts_kwargs(func)

Check whether or not the func accepts kwargs.

>>> from pydu.inspect import func_accepts_kwargs
>>> def f(**kwargs):
...     pass
...
>>> func_accepts_kwargs(f)
True

pydu.inspect.func_accepts_var_args(func)

Check whether or not the func accepts var args.

>>> from pydu.inspect import func_accepts_var_args
>>> def f(*vargs):
...     pass
...
>>> func_accepts_var_args(f)
True

pydu.inspect.func_supports_parameter(func)

Check whether or the func supports the given parameter.

>>> from pydu.inspect import func_supports_parameter
>>> def f(name):
...     pass
...
>>> func_supports_parameter(f, 'name')
True
>>> func_supports_parameter(f, 'unkown')
Fasle

pydu.inspect.func_has_no_args(func)

Check whether or not the func has any args.

>>> from pydu.inspect import func_has_no_args
>>> def f():
...     pass
...
>>> func_has_no_args(f)
True