#!/usr/bin/python

#A Python dictionary is a collection which contains key value pairs, where the
#key must be an immutable object

# you can also run this in the interpretor

phonebook =  {'joe':'568-564-1109', 'ashish':'657-097-7862'}

print "\nPrinting the phonebook"
print phonebook
print "\nPrinting joe's phone number"
phonebook['joe']

print "\nAdding an element to the phonebook"
phonebook['joel'] = '657'
print "\nPrinting the phone number of the newly added contact joel"
print phonebook['joel']

print "\nItearating across the phonebook with it's keys"
for k in phonebook.keys():
   print k, phonebook[k]

print "\nHere's how we remove an element from the dictionary - removing 'joel'"
del(phonebook['joel'])

print "\nIterating across the phonebook with key and value"
for k, v in phonebook.items():
   print k, v