Python Global Keyword
The 'global' keyword in Python is a statement used to declare that a variable inside a function refers to a global variable from the outer scope, allowing modification of that global variable within the function. It overrides the default behavior where variables assigned inside a function are treated as local unless explicitly declared otherwise. This is essential for managing variable scope and state across different parts of a program.
Developers should learn and use the 'global' keyword when they need to modify global variables from within functions, such as in scripts with shared configuration settings or state management in simple applications. It is particularly useful in small-scale projects or scripts where using global variables is acceptable, but it should be used sparingly to avoid code that is hard to debug and maintain due to side effects.