## Naming rules

There are a few rules we need to consider when creating variables.

Variable rules

• Can contain letters: example
• Can contain numbers: example1
• Can contain underscores: example_1
• Can contain dots: example.1
• Cannot start with numbers: 2example
• Cannot start with underscores: _example
• Cannot start with a dot if directly followed by a number: .2example
Create variables through assignments