number of function arguments

[Justin Shaw]

> I have encountered such a problem. Suppose I have a some function. How
> can I get the number of its arguments?
> Giorgi
>

Giorgi,
First thing I always try with questions like this is searching around with
dir().
Justin

>>> def f(x):
 print x

 >>> dir(f)
['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__get__',
'__getattribute__', '__hash__', '__init__', '__name__', '__new__',
'__reduce__', '__repr__', '__setattr__', '__str__', 'func_closure',
'func_code', 'func_defaults', 'func_dict', 'func_doc', 'func_globals',
'func_name']
>>> dir(f.func_code)
['__class__', '__cmp__', '__delattr__', '__getattribute__', '__hash__',
'__init__', '__new__', '__reduce__', '__repr__', '__setattr__', '__str__',
'co_argcount', 'co_cellvars', 'co_code', 'co_consts', 'co_filename',
'co_firstlineno', 'co_flags', 'co_freevars', 'co_lnotab', 'co_name',
'co_names', 'co_nlocals', 'co_stacksize', 'co_varnames']
>>> print f.func_code.co_argcount
1
>>>