Script to show how to return a function from another function

function_returning_function.py

# Script to show how functions can return functions

def get_talk(type = 'shout'):
    
    # We define some functions here on the fly.
    def shout(word = 'yes'):
	return '%s!' %(word.capitalize())
    
    def whisper(word = 'yes'):
	return '%s...' %(word.lower())
    
    # Then we return one of these functions
    if type == 'shout':
	# Note that while returning a function we are not using (). That will call the 
	# function instead of returning the function.
	return shout
    else:
	return whisper

# How to use this?

talk = get_talk()
# Call the get_talk() and assign the returned function to a variable "talk".

print talk
# Outputs: <function shout at 0xb75ee534>

# Now we can call the returned function
print talk()
# Outputs: Yes!

# We can also combine the assignment of the returned function and calling it in one go!
print get_talk(type = 'whisper')()
# Outputs: yes...