To invoke a specific edition of Python, type py followed by the switch in the left-hand column for the appropriate version. For instance, to launch the 64-bit edition of Python 3.9, you would type ...

KS3; Procedures and functions Procedures in Python. When writing programs, we should avoid long, repetitive code. Procedures and functions help to keep our programs simple and short.

KS3; Procedures and functions Functions in Python. When writing programs, we should avoid long, repetitive code. Procedures and functions help to keep our programs simple and short.