1.2 Variables, Input and Output

1.2 Variables, Input and Output

After this unit you will: declare variables following the conventions, print results neatly and read data from the user.

Key points

• Naming: variables and functions use snake_case, constants use UPPER_SNAKE_CASE, classes use PascalCase.
• del x deletes the name x; using x afterwards causes a NameError.
• print(*objects, sep=' ', end='\n') — sep is what is inserted between values, end is what is inserted at the end.
• f-string: f"{score:.2f}" prints 2 decimal places.
• input() always returns a string — to do calculations you must convert the type: int(input(...)).