Script to show how you can define a function inside another function

function_inside_function.py

# Script to show how to define functions inside functions and its scope

def talk():
    
    # We can define a function inside a function like this. In this case we define a
    # function whisper() inside the funtion talk()
    def whisper(word = 'yes'):
	return '%s...' %(word)

    # And we can use the function whisper right away inside the wrapping function
    print whisper()

# We call the function talk(). The function whisper() is defined EVERY TIME the talk() 
# function is called.
talk()
# Outputs: yes...

try:
    print whisper(word = 'no')
except NameError as e:
    print 'exception: %s' %(e)
# However, the "whisper" function DOES NOT EXIST outside the function talk()