Hello,

I have a set of some objects. With these objects I want to call a Python 
method. But the writer of the method shall have the option to select 
from these objects as method parameter.

At the moment i use the following way to call a method with the a or b 
or both parameter.

try:
     method(a=value)
except TypeError:
     try:
         method(b=value)
     except TypeError:
        method(a=value, b=value)

This is getting really complex the more optional parameters I want to 
provide.
Is there any other way to access the method parameter?

Thanks in advance,
Dennis

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