None

[Peter Otten]

Daniel Schüle wrote:

 
> def executer(func, para):
>  func(para)
> 
> def foo():
>  print "function without parameter"
> 
> def bar(a):
>  print "function with 1 parameter"
>  print a
> 
> #executer(foo, None)    #error
> 
> executer(bar, 100)

[...]

> is there a way to allow parameterless functions as parameter in executer?

You can change executer() to accept and pass and arbitrary number of
arguments:

def executer(func, *args):
    func(*args)

executer(bar, 100)
executer(foo)

However, excecuter(foo, None) will still fail. See
http://www.python.org/doc/current/tut/node6.html for the details.

As an aside, do the newsgroup - and yourself - a favour and increase your
block indent to 4 spaces.

Peter