In earlier step, function object inner is returned in variable function_call which means function_call() now actually calls function inner(). But within function inner(), variable message is used which is Free Variable created in outer() scope and used in inner(). Function inner() is created in the scope of outer() but not yet called.Variable message is created and value "Welcome to Closures" is stored.Here is the execution flow for statements within outer(): function_call = outer() is executed and function outer() is called.outer() function is created first but not called, so statements within outer() are not executed yet.So, how does above program works here? Here are the execution steps: To understand how closures in Python remembers these values, let us consider following example: Python Source Code: Closures Example In other words we can define closures as a function object that remembers some values. Python accomplish this task by creating an intermediary object called Cell. The technique by which free variables get attached to the function in Python is known as Closures.
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