def _get_fct_number_of_arg(self, fct):
        """Get the number of argument of a fuction."""
        py_version = sys.version_info[0]
        if py_version >= 3:
            return len(inspect.signature(fct).parameters)
        return len(inspect.getargspec(fct)[0])
def _get_fct_number_of_arg ( self , fct ) : py_version = sys . version_info [ 0 ] if py_version >= 3 : return len ( inspect . signature ( fct ) . parameters ) return len ( inspect . getargspec ( fct ) [ 0 ] )
Get the number of argument of a fuction.