Variable Naming Rules in Python

In Python, variable names must follow certain rules to work correctly. Following these rules also makes your code easier to read and understand.

Variable Naming Rules

• Don't start variable name with a number for eg 1name
• Start with a letter (a–z, A–Z) or an underscore (_).
• Use only letters, numbers, and underscores. No spaces or special characters.
• Python is case-sensitive: age and Age are different variables.
• Choose descriptive names that clearly indicate what the variable stores.

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Bad Examples ✗

Using meaningful and readable variable names makes your code easier for you and others to understand.