#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
ENGG1811 Lecture Week 6

Multiple default argument 
"""
# A function to print two numbers in either ascending or
# descending order. It also has an option to print the
# the numbers entered by the user 

def arrange(num1, num2, order = 'ascending', print_orig = False): 
    # big <- bigger number 
    # small <- smaller number 
    if num1 >= num2:
        big, small = num1, num2 
    else:
        big, small = num2, num1    
    
    # Print in ascending or descending 
    # order depending on the input 
    if print_orig:
        print('Original values:',num1,num2)
    
    if order == 'ascending':
        print(order,':',small, big)
    elif order == 'descending':
        print(order,':',big, small)  
    else:
        print('Invalid option')
        
#%%             
# All the calling methods give the same result         
arrange(10, 7) 
arrange(10, 7, 'ascending')   
arrange(10, 7, 'ascending', False)

#%% All the calling methods give the same result   
# The second calling method is the interesting one 
# By using keyword argument, you can skip the default 
arrange(10, 7, 'ascending', True)

arrange(10, 7, print_orig = True)

# Note: The will NOT work: arrange(10, 7, True)

#%% Try this too
# arrange(10, 7, print_orig = True, order = 'descending')