[Python-Dev] Reasons behind misleading TypeError message when passing the wrong number of arguments to a method (original) (raw)

John Arbash Meinel john.arbash.meinel at gmail.com
Thu May 20 01:53:03 CEST 2010

Giampaolo Rodolà wrote:

class A: ... def echo(self, x): ... return x ... a = A() a.echo() Traceback (most recent call last): File "", line 1, in TypeError: echo() takes exactly 2 arguments (1 given) I bet my last 2 cents this has already been raised in past but I want to give it a try and revamp the subject anyway. Is there a reason why the error shouldn't be adjusted to state that 1 argument is actually required instead of 2?

Because you wouldn't want to have

A.echo()

Say that it takes 1 argument and (-1 given) ?

John =:->

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