Object Oriented Programming

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The location where the programmer can find a variable and also access it is called the scope of a variable. Variable inside a function belongs to the local scope of that function, that variable can only be used inside that function.

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NameError: name 'x' is not defined

Any function inside another function can access the outer function's variables.

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Variables that are initialized in the main body of the Python code are global variables and belong to the global scope. Global variables are accessible in both global and local scopes.

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If there are variables with the same name, one inside a function (local variable) and another outside the function (global variable), Python will consider these as two different variables.

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If you need to create a global variable but are stuck in the local scope, you can use the global keyword. The global keyword makes the variable global.

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