Python · Variables and types
Naming Conventions
The full text of this chapter, to read or revisit. To practise, do the exercises.
▶ Do the exercisesExercise 1 — Naming convention
To keep things organized and consistent in the code, we use naming conventions for variables. Basically, these are rules created by developers so that variable names are clear and easy to understand.
In Python, we use snake_case for variable names:
- descriptive name
- all letters are lowercase
- underscores between words
- no special characters
- no numbers at the beginning
- name in english
For example:
score_player
,
game_level
,
player_name
.
Variables names in english / french
Because I'm French and this course was originally written in French, some variable names might be in French. Feel free to send me an email or report the question when you see one, thanks!
Exercise 2 — Variable creation following snake_case rules
Which of these is the correct and snake_case way to declare and assign a value to a variable in Python?
Options
• ```codemon_name = "Aquachu"```
• ```Codémon_name = "Aquachu"```
• ```codemon name = "Aquachu"```
• ```codemon n@ame = "Aquachu"```
Hint : Remember : snake_case, lowercase, no special characters, no numbers at the beginning, descriptive name in English.
Exercise 3 — Naming convention
Which of these variable names follows snake_case naming conventions?
Options
• ```codemon_type```
• ```codemon type```
• ```codemon-type```
• ```codemon@type```
Hint : Remember: snake_case, lowercase, no special characters, no numbers at the beginning, descriptive name in English.
Exercise 4 — Naming convention
Match each variable name on the left with it's issue about the naming convention on the right
Items to match
• Codemon_name
• codemon@name
• 1_codemon_name
• variable
Definitions
• First letter is uppercase
• Special character used
• Starts with a number
• Not descriptive enough