Python Tutorial: Variables In Python
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In this Python tutorial, you will learn about Python variables.
Variables in Python
In this Python tutorial, we will look at variables in Python 3. Variables are almost as important as objects in Python programming. We use variables all the time.
What Is A Variable In Python
A variable is a name we provide for an object. Once a variable is created it can change its value(data) hence the name variable. Variables contain absolutely no information about an object. A variable will point to or references an object that it is representing and the object holds all the information like the location(id), type information, value(data), reference counter and sometimes reference to another object.
Since variables do not hold any information we can easily change values and data types of a variable without any issues. For example in the C language and a new language called Swift, you must declare the variables type before using the variable and which means once the variable is declared you can not change the data type of the variable.
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