How do we define variables in Python?

In Python, variables can be defined by assigning a value to it using an equal sign. The syntax is as follows:

variable_name = value

In which, variable_name is the name of the variable, which can be any valid identifier. value is the value to be assigned to the variable. Based on the type of value, the variable’s type will be automatically determined.

For example, to define a variable of integer type named x and assign it a value of 10, you can use the following code:

x = 10

You can define a string variable named “name” and assign the value of “John” using the following code:

name = "John"

In Python, you can define any number of variables, separating each variable with a comma. For example, to define two variables ‘a’ and ‘b’ simultaneously, you can use the following code:

a = 5
b = 3.14

It is also possible to assign the same value to multiple variables at the same time. For example, to define three variables x, y, and z and assign them all the value of 0, you can use the following code:

x = y = z = 0

In addition, it is also possible to define new variables using previously defined variables. For example, if variable a has been defined as 5, you can use the following code to define variable b as twice the value of a:

a = 5
b = a * 2

Therefore, the value of variable b will be 10.