1
00:00:00,660 --> 00:00:01,730
Welcome back.

2
00:00:01,740 --> 00:00:05,670
Let's continue our understanding of int and float.

3
00:00:05,780 --> 00:00:12,320
We talked about the idea of these two data types and how we can use operations on them that we're familiar

4
00:00:12,320 --> 00:00:18,500
with from math class plus a few ones that maybe we haven't seen before such as modulo or the double

5
00:00:18,500 --> 00:00:23,670
slash or the double multiply for the Power of Now.

6
00:00:23,700 --> 00:00:30,390
This is really cool because we can get our computers to do well math for us like a calculator right

7
00:00:31,440 --> 00:00:37,070
but a programming language also provides for us different actions that we can perform.

8
00:00:37,380 --> 00:00:44,140
Now besides these ones we also learned that there's a type action that we can take.

9
00:00:44,130 --> 00:00:51,360
There's a print action that we can take but there's also specific math type functions that enter and

10
00:00:51,360 --> 00:00:56,600
float are able to use that are built into python.

11
00:00:56,660 --> 00:01:01,920
Now these are called well math functions and functions.

12
00:01:02,000 --> 00:01:08,940
Something we'll talk about later on are these actions that we've been talking about remember our diagram

13
00:01:08,940 --> 00:01:09,790
here.

14
00:01:09,870 --> 00:01:15,230
We're starting to learn about the data types and the actions that we can perform on them.

15
00:01:15,240 --> 00:01:21,870
Now in most programming languages these actions are called functions and we have a whole section on

16
00:01:21,870 --> 00:01:22,230
them.

17
00:01:22,290 --> 00:01:26,940
But for now there's some functions that we can use.

18
00:01:26,940 --> 00:01:28,800
So this is a print function.

19
00:01:28,800 --> 00:01:38,070
This is a type function but there's specific math functions such as around and you see right away when

20
00:01:38,070 --> 00:01:47,200
I type Ripple is a tool like an idea that hints and tells us what we can add so says round and give

21
00:01:47,200 --> 00:01:51,190
me a number and maybe an digit.

22
00:01:51,330 --> 00:01:53,110
But let's just worry about the first one for now.

23
00:01:53,400 --> 00:01:57,510
So around if I do three point one and I round here

24
00:02:00,760 --> 00:02:01,640
two.

25
00:02:02,010 --> 00:02:03,470
Well that's not right.

26
00:02:03,490 --> 00:02:04,010
Right.

27
00:02:04,050 --> 00:02:11,220
That's actually the result from up here because we need to also tell it to perform with a function of

28
00:02:11,310 --> 00:02:12,420
print.

29
00:02:12,690 --> 00:02:16,810
Hey print to the screen whatever the result of this is.

30
00:02:16,960 --> 00:02:21,280
And just to make things easier to see I'm going to comment this out.

31
00:02:21,330 --> 00:02:26,760
So I'm just selecting everything and then pressing command slash or if you're on Windows control slash

32
00:02:27,300 --> 00:02:37,260
if I click Run I get three because I'm rounding down the number so let's say it was three point nine

33
00:02:37,830 --> 00:02:46,570
I click and I get four again I'm rounding the number another math function that's built into python

34
00:02:47,290 --> 00:02:56,560
is something called a B S and you see right away that I get a B.S. here and a B.S. returns the absolute

35
00:02:56,590 --> 00:03:03,370
value of the argument and again for those that aren't too familiar with math an absolute value simply

36
00:03:03,370 --> 00:03:05,740
means well no negative numbers.

37
00:03:05,740 --> 00:03:10,340
So an absolute value of negative 20 is 20.

38
00:03:10,700 --> 00:03:15,520
And now because we know about math functions I can start Googling right.

39
00:03:15,610 --> 00:03:21,490
I can say hey I'm a python programmer and I want to learn about math functions well I can go Python

40
00:03:22,450 --> 00:03:28,860
3 math functions and look at that right away.

41
00:03:28,860 --> 00:03:33,560
Google tells me that there is a ton that we can use.

42
00:03:33,660 --> 00:03:35,630
You don't have to memorize all of these.

43
00:03:35,670 --> 00:03:39,890
As a matter of fact some of these I've never ever used in my programming career.

44
00:03:40,230 --> 00:03:44,300
But it's good to know that they have these tools available to you.

45
00:03:44,630 --> 00:03:50,250
And as a programmer this is something that you'll have to get used to the idea that you won't actually

46
00:03:50,250 --> 00:03:59,760
memorize every single action that we can take for each data type because some of these are very rarely

47
00:03:59,760 --> 00:04:00,180
used.

48
00:04:00,180 --> 00:04:02,340
Some of them you'll never use in your career.

49
00:04:02,340 --> 00:04:05,750
The key is to understand how to google them how to find them.

50
00:04:05,940 --> 00:04:10,650
And throughout this course I will show you the important ones that you're going to see over and over

51
00:04:10,920 --> 00:04:17,840
and over but as a way for you to develop as a programmer at least you know that this is how you look

52
00:04:17,840 --> 00:04:24,980
for answers and find out that hey there's different math functions that we can use with numbers.

53
00:04:24,990 --> 00:04:25,380
All right.

54
00:04:25,480 --> 00:04:28,580
Let's take a break and continue in the next video by.