A variable in python is a a number or a letter that represents a value, for example in python: Day = "tuesday" is a variable. A variable can be changed. A constant is used in the programming language called C, a constant is different from a variable because a constant is always the same, for example : 2+3 = 5 always stays the same.
Useful webpages : http://www.codingunit.com/c-tutorial-variables-and-constants
Useful webpages : http://www.codingunit.com/c-tutorial-variables-and-constants
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