[Python] what is the difference between a variable and a constant in programming? [closed]

In programming, both variables and constants are used to store data, but they behave differently in terms of how their values can change during the execution of a program.

1. Variable:

A variable is a named storage that can hold a value.

The value can be changed or updated during program execution.

Example (Python):

age = 25 age = 30 # value updated print(age) # Output: 30

1. Constant:

A constant is a named storage whose value cannot be changed once it is assigned.

Not all programming languages have true constants (e.g., Python uses naming conventions like ALL_CAPS to indicate a constant).

Example (C++):

const int MAX_USERS = 100; MAX_USERS = 200; // Error: cannot change a constant value

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