Python TutorialLesson 22Free preview

Python Functions

This lesson is part of Python · All levels

Summary

A function is a block of code named that can be called over and over again so that the program is more organized and not repetitive. We define a function with def, accept the parameter, and then return the value through return. The default parameter makes the argument optional so that the function remains flexible.

Key points

The function is created with the keyword def followed by the name and the curve.
The parameter is the input of the function, whereas the value return is the output.
Without the return statement, the function automatically returns None.
The default parameter makes the argument permissible during the call.

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