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→Functions
=== Functions ===
=== Functions ===
All arguments in Python are passed by reference, if you change a variable value inside a function it will be changed at the calling function.
<source lang="python">
def MyFunction(formal_arg, optional_arg = None, *variable_lenght_args):
print formal_arg
if optional_arg:
print optional_arg
for arg in variable_lenght_args:
print arg
</source>