What are Variables in Python?

Variables are containers for storing data values. Unlike other programming languages, Python has no command for declaring a variable. A variable is created the moment you first assign a value to it.

General Example: Let us consider our lunch box, we can store any kind of food in it (that is no need to specify what is in it).

Example 1: Number (Integer)

x = 8
print(x)
#8

Example 2: String

y = "Madam"
print(y)
#Madam

Example 3: Overwriting Variable

z = 8    # z is of type int
z = "Madam"    # z is now of type str
print(z)
#Madam

Rules to declare a variable

1. A variable can have a short name or a more descriptive name
2. A variable name must start with a letter or the underscore character
3. A variable name cannot start with a number
4. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
5. Variable names are case-sensitive (age, Age, and AGE are three different variables)