Programming in Python/

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Inner Functions, Scope, and the LEGB Rule

Inner Functions, Scope, and the LEGB Rule

Learn about the scope of inner functions and the LEGB rule in Python.

We'll cover the following...

Inner functions

An inner function is simply a function that is defined inside another function. The following program shows how to do this:

Python 3.8
# outer function
def display( ) :
  a = 500
  print ('Saving is the best thing...')
  # inner function
  def show( ) :
    print ('Especially when your parents have done it for you!')
    print(a)
    
  show( )
display( )

In the code above, show() is the inner function defined inside display(). Therefore, it can only be called from within display(). In that ...