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Concepts·Certified Entry-Level Python Programmer

Python Function Definition and Calls

Objective 4.1 is decompose the code using functions, and the syntax is one keyword. What gets examined is what surrounds it: a function with no `return` returns `None`, a function must be defined before the line that *calls* it rather than before the line that mentions it, and a function name is an ordinary variable that can be overwritten - including one of the built-in ones.

Functions and Scope Guide 18 of 26 Beginner

Written against the versions above. Nothing here has changed in Python 3. Type annotations on parameters are legal and are not examined by either exam; none of this path uses them.

One machine, and any shell with Python 3 will do - these exams test the language, not a distribution.
Server NameIP AddressOSRolesCPURAMHDD
RUNNER01192.168.0.27Ubuntu 26.04 LTSPython 3.14.4 - the only machine this path needs2 Core4 GB50 GB

Before you start

  1. def, and what a call gives back

  2. return ends the call immediately

  3. A function must exist by the time it is called

  4. Returning more than one value

  5. A function name has no protection, not even a built-in one

  6. What the exam does with this objective

Official sources

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