[Python-Dev] Quick poll: should help() show bound arguments? (original) (raw)

Anders J. Munch 2013 at jmunch.dk
Sat Jan 25 12:34:06 CET 2014

Larry Hastings wrote:

inspect.signature gets this right: >>> import inspect >>> str(inspect.signature(c.foo)) '(a)'

Not always.

: Python 3.4.0b2+ (default:32f9e0ae23f7, Jan 18 2014, 13:56:31) : [GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)] on darwin : Type "help", "copyright", "credits" or "license" for more information. : >>> import inspect : >>> class C1: : ... def f(*args, **kwargs): pass : ... : >>> c = C1() : >>> c.f() : >>> str(inspect.signature(c.f)) : '(**kwargs)'

Not to mention: class C2: def g(**kwargs): pass

It doesn't really make sense - calling C2().g is guaranteed to fail - but it's legal Python.

I'm not saying you can't special-case a few things and fix this, but still, -1/B. I like explicit self.

regards, Anders

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