Variables are containers for storing data values.
Python has no command for declaring a variable. A variable is created the moment you first assign a value to it.
Properties of variables:
- Variables do not need to be declared with any particular type, and can even change type after they have been set.
Code:
- If you want to specify the data type of a variable, this can be done with casting.
Code:
- You can get the data type of a variable with the
type()
function.
Code:
- String variables can be declared either by using single or double quotes.
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- Variable names are case-sensitive.
Code:
Rules for Python Variables:
- A variable name must start with a letter or the underscore character
- A variable name cannot start with a number
- A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
- Variable names are case-sensitive (ajblogs, AJBlogs and AJBLOGS are three different variables)
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