Casing

There are 4 types of casing in Python:

• snake_case : All lowercase letters and words are separated by underscores. This is used for variable names, function names, module names, etc.
• PascalCase : All words are capitalized and there are no separators. This is used for class names.
• camelCase : All words are capitalized except the first one and there are no separators. This is also used for class names, but it is less common than PascalCase.
• UPPER_CASE : All letters are capitalized and words are separated by underscores. This is used for constants.