Dictionary
Dictionaries are used to store data values in key: value pairs. It is an unordered collection of key-value pairs.
Dictionaries are written in curly brackets {} , with keys and values, commonly referred to as Key: value pairs.
It is generally used when we have a huge amount of data, and it’s mutable, just like a list. This means that it could be changed after it’s been created.
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Dictionaries are optimized for retrieving data. We must know the key to retrieve the value.
But hey, Dictionaries cannot have two items with the same key:
Example of Dictionary. Capital_and_capital = {“Oyo”: “Ibadan”,”Lagos”: “Ikeja”,”kwara” : Ilorin,”Ogun “: “Abeokuta”, “Niger”: “Minna”}.
PS: Python dictionary is just like our traditional dictionary. Where we have words (i. e key in python) and their meanings ( i. e value pairs in python).
