Built-in functions and keyword arguments
Hendrik van Rooyen
mail at microcorp.co.za
Mon Oct 29 18:03:34 CET 2007
"Tim Chase" <python.list at tim.thechases.com>
> > I think you are being a little bit unfair here: help(len) says:
> > len(...)
> > len(object) -> integer
> > Return the number of items of a sequence or mapping.
> > which implies that the argument to len has the name 'object' (although in
> > fact it doesn't have a name).
> And to confound matters even further for the uninitiated,
> says that it's "len(s)" instead (but "len(s=)" doesn't work either)
Looks like a gotcha to me - its the difference between a keyword
(master = 42) and an assignment (s='I am a string')
You just can't do that - how is the parser supposed to know that
the second one is an assignment and not a keyword?
len() should work, though.
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