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PYTHON / CHAPTER 04
Python
Functions.
Functions in depth: parameters and defaults, local scope, early validation, errors, and a record batch. Lessons with Learn and Practice; challenges are separate.
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Lesson with explanation and a guided task. Theory stays readable; completion requires a passing solution.
Challenges are optional and do not block the next chapter.
9 lessons available
The foundations behind your ideas.
- 01Open lesson
Def Params · Locked
def, parameters, and return
- 02Open lesson
Keyword Defaults · Locked
Keyword arguments and defaults
- 03Open lesson
Local Scope · Locked
Local variables
- 04Open lesson
Small Functions · Locked
Splitting into helper functions
- 05Open lesson
Input Validation · Locked
Early return on bad input
- 06Open lesson
Try Except · Locked
ValueError and TypeError
- 07Open lesson
Raise · Locked
raise with a useful message
- 08Open lesson
Return vs Print · Locked
return vs print difference
- 09Open lesson
Record Batch · Locked
Capstone: helpers + try/except