Variables in Python
This book resource provides information about variable definition, types, rules to create variables, assign values etc.
Note : This is mandatory to complete. After completion, you can manually mark the activity as completed
4. Rules to name a Variable
A variable can have a short name (like a and b) or a more descriptive name (name, salary, occupation). There are some rules to name variables in python:
- A variable name must start with a letter or the underscore character
Example: var, Var, VAR, _variable (Note: Python variable are case sensitive. i.e., var & VAR are two different variables.
2. A variable name cannot start with a number.
Example: 9var, 3_var, 4a, etc. are invalid variable names.
3. A variable name can only contain alpha-numeric characters and underscores (A- z, 0-9, and _ )
Example: a3b, a_b, var_name, _ab # valid variable names
2ab, $var, @34b # invalid variable names
4. Variable names are case-sensitive (age, Age and AGE are three different variables)
5. A variable name cannot be any of the keywords of python.
Example: if, elif, for, class, etc are can not be used as variable names
Video: The following video provides you the knowledge to how to name a variables in python.
"Chapter 2: Naming Variables" by J David Eisenberg is licensed under CC BY-SA 4.0