Dictionaries in Python are data structures used to store
collections of key-value pairs.
Unlike sequences such as lists or tuples, which are indexed by
a range of numbers,
dictionaries are indexed by keys, which can be of any immutable
data type (such as strings, numbers, or tuples).
chapters:
0:00 intro
0:25 empty dict
1:00 dictionaries
2:12 list vs dict
3:40 clear method
4:17 copy method
4:45 items method
5:12 keys method
5:38 values method
6:03 pop method
7:00 update method
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