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Achtung: Listen als Parameter

>>> def s(liste):

... print(id(liste))

... liste += [47, 11]

... print(id(liste))

...

>>> fib = [0, 1, 1, 2, 3]

>>> id(fib)

24746248

>>> s(fib)

24746248

24746248

>>> id(fib)

24746248

>>> fib

[0, 1, 1, 2, 3, 47, 11]

Anderes Verhalten, falls nicht in-place:

>>> def s(liste):

... liste = liste + [47, 11]

...

>>> fib = [0, 1, 1, 2, 3]

>>> s(fib)

>>> fib

[0, 1, 1, 2, 3]