'''
1. {} this is how an empty dict looks like.
2. {'foo':42)
3. dictionary can have mutiple indexes like key and key-value-pair where as list contain only 1 index which should be int
Sencondly dict is unordered whereas list are ordered
4. we will get a KeyError
5. 'cat' in spam is a shorter way of writing the code.
6. 'cat' in spam shows the keys in a dict_list where as spam.values() shows the values of the key in dict_list/ 
7. spam.setdefault('color', 'black')
8. import pprrint module and use pprint.pprint() function


