How do I create a constant in Python?

Question

Is there a way to declare a constant in Python? In Java we can create constant values in this manner:

public static          


        

Answer 1

In Python, constants do not exist, but you can indicate that a variable is a constant and must not be changed by adding CONST_ to the start of the variable name and stating that it is a constant in a comment:

myVariable = 0
CONST_daysInWeek = 7    # This is a constant - do not change its value.   
CONSTANT_daysInMonth = 30 # This is also a constant - do not change this value.

Alternatively, you may create a function that acts like a constant:

def CONST_daysInWeek():
    return 7;