We cover the most basic 'hello world' exercise! This will be fun and now you are on your way to an exciting journey!
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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.