Avi Kak wrote:
> Suppose I write a function that I want to be called
> with ONLY keyword argumnts, how do I raise an
> exception should the function get called with
> what look like position-specfic arguments?
here's one way to do it:
>>> def func(*args, **kw):
... def myrealfunc(a=1, b=2, c=3):
... print a, b, c
... if args:
... raise TypeError("invalid call")
... return myrealfunc(**kw)
...
>>> func(1)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<stdin>", line 5, in func
TypeError: invalid call
>>> func(a=3)
3 2 3
>>> func()
1 2 3
here's another one:
>>> def func(dummy=None, a=1, b=2, c=3):
... if dummy is not None:
... raise TypeError("invalid call")
... print a, b, c
(but this is easier to trick).
hope this helps!
</F>
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