Original subtitles

0 OK. 1

So you know strings, you know floats, you know integers, you know lists. 2

OK. 3

So you know data types. 4

But how can you actually do something in Python? 5

What can you do with these data types? 6

Well to answer your question you should look at the dir command. 7

Well let me now start to use the Python shell a little bit more to do things quicker. 8

So I'm going to split this into two. 9

This is for executing the Python file. 10

This is for the interactive Python shell. 11

So what can we do with lists? 12

You can find that out by doing dir. 13

Dir is a function in Python that will give you 14

all the things you can do with a specific type. 15

So with a list in this case, all these here are attributes of a list, you can do the same for checking int. 16

You can do the same for checking floats, dr float, dir str. For example let's stop at str before 17

we go to lists, with a string you can do for example, you can turn them into uppercase using these method. 18

To find out what upper does you want to use 19

help str, that is the type that has the attributes upper. Now attributes are all these, and they can be 20

either methods or properties. 21

You do know that until you check with help. 22

So that is the help documentation for the upper method. 23

It's a method as you can see here. Q to quit and go back to the shell and then let's go ahead and use 24

that. 25

"hello" 26

dot upper, you use the method with round brackets, with parentheses and that's with the return 27

the capitalized version of "HELLO". If we used title instead that will capitalize the first letter only. 28

Of course you can use variables 29

and you get the same output. 30

Now what do we have for lists? 31

How about calculating the average of the student grades? 32

Let's do that in the next video.