Original subtitles

0 Do dictionaries have the same index system as lists and strings? 1

Let's find that out. 2

I have this dictionary here on my Python Shell. 3

Student grades. 4

So let's try to get the second item maybe. 5

Nope, it's says KeyError: 1 which means that the dictionary doesn't have a key named 1. 6

So what keys does the dictionary have? 7

Maybe the "Sim" key. 8

Yes, so dictionaries instead of integers they have keys as indexes. 9

So a least would be access, the items of the list would be accessed via integers which start from 10

zero. 11

An end to the last item of the list, the index of the last item of the list. With dictionaries 12

this is different as you can see and this is actually what makes dictionaries a dictionary. 13

Let's see another example of how useful this is. 14

Let's say you have this dictionary English the Portuguese. It's a real human dictionary. 15

You have some words there. 16

Let's say "rain", "chuva" in Portuguese and "sun" will be "sol." 17

Sorry I've got a typo there, quote. 18

So now if you want the Portuguese version of sun, you write that and that will give you that version. 19

So having integers s indexes in this case would be very useless. 20

So every use case has its own data structure to be used in Python.