Variable names can not have spaces, they're continuous strings of characters.
The creator of the Python language himself, Guido van Rossum, implores us to use snake_case for variable names. What is snake case? It's just a style for writing variable names. Here are some examples of different casing styles:
| Name | Description | Code | Language(s) that recommend it |
|---|---|---|---|
| Snake Case | All words are lowercase and separated by underscores | num_new_users |
Python, Ruby, Rust |
| Camel Case | Capitalize the first letter of each word except the first one | numNewUsers |
JavaScript, Java |
| Pascal Case | Capitalize the first letter of each word | NumNewUsers |
C#, C++ |
| No Casing | All lowercase with no separation | numnewusers |
No one: don't do this |
To be clear, your Python code will still work with Camel Case or Pascal Case, but can we please just have nice things? We just want some consistency in our craft.
If you won't use snake case for you, do it for me. I beg you.
Which is valid snake case?