We cover the most basic 'hello world' exercise! This will be fun and now you are on your way to an exciting journey! See also: Part 1: How to Download and Install Python Transcirpt 00:00 Okay guys, back to where we left off. 00:02 So, we just did some simple stuff in Python, 00:06 right, we can print stuff by doing this. 00:09 And then it prints it out to the screen. 00:11 That's cool.00:13Now, what we wanna do is we want to take it 00:15 to a little bit of a next level. 00:17 I want you to come up here and select "New File." 00:22 This brings up this file, here. 00:25 Let's go back to our other screen. 00:28 And let us simply put this to the right side. 00:33 Let's put this to the left side. 00:36 And, what I wanna do is I want to write a few things here, 00:39 like "print hello," 00:42 "print monkeys eat bananas all the time." 00:50 And then I want to say- 00:53 And notice how I'm putting these quotes. 00:55 We will learn a little bit more about that later. 00:57 And then I can say "print five times 25." 01:02 Okay. 01:06 And I am gonna run this. 01:08 So I'm gonna save this first. 01:11 You can save it anywhere you would like. 01:14 Let's, for our purposes, let's save it in our desktop. 01:18 Or, let's do one better and let's go here 01:22 and let's call this "practice exercises" 01:26 and we will save it in here, printing. 01:31 And I'm going to go to "Run" and hit "Python Shell." 01:37 And here you're going to see what happens. 01:38 I'm gonna say "Run" and actually "run module." 01:41 So I'm going to say "run module." 01:42 That just means run this whole thing that we just wrote. 01:45 So let's run it, let's check out what happens. 01:48 Boom. 01:49 On the left hand side, it ran our entire file. 01:52 On the left hand side, 01:54 everything you type in 01:55 (keyboard clicking) 01:58 gives you the result right away. 01:59 So you can write four times eight, 20 times 6, 02:03 but on the right hand side, 02:05 notice when I press enter nothing happens. 02:07 So, you're kind of writing a story here, 02:10 that's how I like to think of it. 02:12 You're writing kind of a novel. 02:13 And this is almost you having a conversation with Python. 02:17 You're like, "Hey Python, what's up?" 02:19 or in Python's language, eight times eight. 02:23 And Python is like "64." 02:25 Here, Python is not listening to you. 02:27 You write out your entire whatever you want to write, 02:30 and then you send it over to Python, 02:32 and then Python responds to all of that. 02:36 Almost like you're sending an Email to Python 02:39 and Python is sitting there, 02:40 and once it sees your Email it'll type stuff back to you. 02:45 Okay, let's run it again just to check what happens. 02:48 And I will run, and you can see that it runs 02:51 all of that at the same time. 02:54 So, what I wanna do is 02:57 I wanna give you guys a little problem. 02:59 And the problem is: How would you print 03:01 "Hello World?" 03:03 And I want to be able to test this for you guys. 03:06 So what I have done is I have set up something kind of cool. 03:10 I want you to go on, 03:12 open a new tab, 03:14 I want you to go to 03:14 clever programmer dot com. 03:16 And once you're here, 03:18 I want you to click on "learn Python for beginners." 03:21 Notice that it's free. 03:23 So, simply go to that. 03:25 And here I've put together a little exercise for you guys. 03:28 So, once you start this course, 03:30 you can feel free to watch all of this on YouTube, 03:33 it's available for free. 03:35 If you want, you can also go to my website. 03:39 And here it'll give you a little progress bar and everything, 03:42 you can comment and I can respond to you as well. 03:44 And here, this is where I'll also put 03:46 all of the exercises. 03:48 So if you guys want to follow along this course 03:50 and do the exercises, this is where you can come 03:52 and find them. 03:53 So let's click exercise one and start. 03:56 Now, notice you have a quiz here. 03:58 It says "How do you print out "Hello, World!" 04:01 So, I'm now going to answer that for you here. 04:04 Although I'm sure you can figure out. 04:06 And we want it to look exactly like this in Python 3. 04:10 Just a little bit about Python 3 versus Python 2, 04:13 is if you do this in Python 3, 04:17 you're gonna get an error. 04:18 So, let's just try it out on the left hand side. 04:20 Let's say "print 10." 04:23 You can see that we get an error. 04:25 And if I do "print 10" 04:27 I don't get an error. 04:29 So in Python 3, this is the correct way of doing it. 04:31 In Python 2, you can do it just like this 04:35 and it actually will not give you an error, okay? 04:37 Just something for you to know. 04:39 So here, I want you to select the correct answer. 04:42 And another thing I made for you guys is 04:44 if you click this link, 04:48 what I've put together is so simple. 04:52 You'll have to sign up, it'll be really short. 04:55 And once you're done doing that, just click on 04:56 exercise one. 04:57 And on the right hand side, 04:59 you see that I want you to print out "Hello, World!" 05:03 Alright, so now that you're here, 05:05 let's type in something like "print 25 times 63" 05:10 and let's run it. 05:12 It gives me 1575. 05:13 Great, let's hit submit. 05:14 Let's see what happens. 05:16 Oh, whoops. 05:17 It says "Output mismatch" and you've failed 05:20 to answer it correctly. 05:24 So you can click "What's wrong?" 05:26 and it'll kind of tell you what the answer is, 05:28 or you can hit submit anyway, 05:30 and then it might also tell you what the answer is. 05:32 But, I want you to try to figure it out. 05:34 And I'm sure you probably already have. 05:36 So I'm not going to tell you what the answer is, 05:38 but once you write the correct answer, 05:40 it'll give you a little green thumbs up 05:41and say "Hey, good job, you got it." 05:43 So now I want you try it,05:46and I'll see you in the next video.

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Python for Beginners, Part 2: Hello World Exercise

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