Naming conventions

301.3 Variables and Constants

Variables and Constants — Note 4 of 4

Use meaningful identifiers.

What you need to know

Variable names should describe what they store. Python uses snake_case (lowercase with underscores) for variables and functions. Good names make code self-documenting.

What to know

Use descriptive names: total_score not ts
Use snake_case: player_name not playerName
Cannot start with a number or use spaces
Avoid single letters except for loop counters (i, j)

Code examples

Good vs bad names

python

# Good
player_name = "Alice"
total_score = 95

# Bad
p = "Alice"
ts = 95

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Specification notes for programming are in Paper 2.