what does 'for _ in range()' mean?
della at toglimi.linux.it
Thu Jul 29 15:37:33 CEST 2004
Peter Hansen wrote:
> I have no idea what you are talking about; sorry. The "code"
> you show is not valid, and since you aren't talking about a
> function *definition* (where duplicate names are disallowed)
> but apparently about calling a function, I can't see that this
> has the slightest thing to do with the topic at hand.
Of course this is not valid python code. :-)
This is a pseudo-functional language function definition. It is
specified by pattern matching:
foo(a, a) = True
means that calling foo with a tuple of two identical arguments returns
foo(_, _) = False
means that calling foo with a tuple of any two arguments returns False,
if the above condition isn't met.
The goal was to put into evidence the use of pattern-matching and '_'.
That's all. :-)
I hope this is clearer now...
More information about the Python-list