Constants

Constant values

Constants are values that a user does not aim to change. Most languages provide a different syntax for them to ensure their value does not get overwritten in the code accidentally. Although Python does not provide a defined syntax for this purpose, it has a common practice of naming constants in uppercase.

Example

For example, suppose we want to create a program that involves the use of pi. Because we know the value of pi does not change during calculations, we can treat it as a constant and name it PI. It is the programmer's responsibility to not reassign it elsewhere.

More constants

Let’s take a look at some other constants below. We can utilize their values during other calculations but they are not meant to be updated.