On 17 February 2012 07:53, Zheng Li <dllizh...@gmail.com> wrote:
> def method1(a = None):
> print a
>
> i can call it by
> method1(*(), **{'a' : 1})
>
> I am just curious why it works and how it works?
> and what do *() and **{'a' : 1} mean?
>
> when I type *() in python shell, error below happens
>
> File "<stdin>", line 1
> *()
> ^
> SyntaxError: invalid syntax
It's worth reading the Python tutorial. Here's the relevant section:
http://docs.python.org/tutorial/controlflow.html#unpacking-argument-lists
You could read all of 4.7
--
Arnaud
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