Web Reference: Global variables can be used by everyone, both inside of functions and outside. Create a variable outside of a function, and use it inside the function. If you create a variable with the same name inside a function, this variable will be local, and can only be used inside the function. In this tutorial, you'll learn how to use global variables in Python functions using the global keyword or the built-in globals () function. You'll also learn a few strategies to avoid relying on global variables because they can lead to code that's difficult to understand, debug, and maintain. Jul 11, 2016 · If you want to refer to a global variable in a function, you can use the global keyword to declare which variables are global. You don't have to use it in all cases (as someone here incorrectly claims) - if the name referenced in an expression cannot be found in local scope or scopes in the functions in which this function is defined, it is ...
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