On Jan 16, 2016, at 08:05, Aviv Cohn via Python-Dev <[email protected]>
wrote:
>
> The `getargspec` function in the `inspect` module enforces the input
> parameter to be either a method or a function.
The `getargspec` already works with classes, callable objects, and some
builtins.
It's also deprecated, in part because its API can't handle various features
(like keyword-only arguments). There is an extended version that can handle
some of those features, but as of 3.5 that one is deprecated as well.
The `signature` function is much easier to use, as well as being more powerful.
>
> def 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.
> """
>
> if ismethod(func):
> func = func.im_func
> if not isfunction(func):
> raise TypeError('{!r} is not a Python function'.format(func))
> args, varargs, varkw = getargs(func.func_code)
> return ArgSpec(args, varargs, varkw, func.func_defaults)
>
> Passing in a callable which is not a function causes a TypeError to be raised.
>
> I think in this case any callable should be allowed, allowing classes and
> callable objects as well.
> We can switch on whether `func` is a function, a class or a callable object,
> and pass into `getargs` the appropriate value.
>
> What is your opinion?
> Thank you
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