1 00:00:01,000 --> 00:00:07,060 Hey, in this video, we will continue our Code Experiment series where we try to change things from 2 00:00:07,060 --> 00:00:09,520 the code and see how the output changes. 3 00:00:09,520 --> 00:00:14,020 So that gives you more understanding about how the code works. 4 00:00:15,180 --> 00:00:25,050 For this, I will create a new folder directory experiments, and then inside here I'll just create 5 00:00:25,050 --> 00:00:26,040 a python file. 6 00:00:28,090 --> 00:00:35,770 So the first experiment I wanted you to try is to just say, well, through and then print anything 7 00:00:35,770 --> 00:00:36,040 here. 8 00:00:36,040 --> 00:00:36,460 Such as? 9 00:00:36,460 --> 00:00:37,800 Hello, The string. 10 00:00:37,810 --> 00:00:38,380 Hello. 11 00:00:38,680 --> 00:00:47,020 Now, if I right click here and run this script, what I'll get is Hello, Print it out all the time, 12 00:00:47,680 --> 00:00:48,760 repeatedly. 13 00:00:49,300 --> 00:00:55,630 So nothing is stopping my computer from printing of this string over and over again. 14 00:00:57,370 --> 00:01:00,400 So why is Hallo printed out all the time? 15 00:01:00,610 --> 00:01:01,840 That's the first question. 16 00:01:01,840 --> 00:01:06,440 Well, it is being printed out because this is always true. 17 00:01:06,460 --> 00:01:12,250 So nothing is stopping this line from being executed over and over again. 18 00:01:13,390 --> 00:01:21,220 If the bonus example video which comes later today, you will see that we can write conditions which 19 00:01:21,220 --> 00:01:25,060 will change the behavior of the wild loop. 20 00:01:25,480 --> 00:01:30,040 So these conditions will control how many times the wild loop executes. 21 00:01:30,370 --> 00:01:34,720 But this loop here doesn't have such dynamic conditions. 22 00:01:35,020 --> 00:01:39,970 So the next question is how many times is this hello printed out? 23 00:01:40,450 --> 00:01:45,250 And the answer is, well, depends on your computer processor speed. 24 00:01:46,430 --> 00:01:54,670 So this would be about every X milliseconds or so, depending how able your processor is to receive 25 00:01:54,670 --> 00:01:56,720 the instructions and return the output. 26 00:01:58,090 --> 00:01:59,800 Another experiment. 27 00:02:00,730 --> 00:02:05,540 So let me put here the code that we wrote during the video tutorials earlier. 28 00:02:05,560 --> 00:02:09,370 This is the exact code that we have built so far in our app. 29 00:02:09,940 --> 00:02:19,970 Now, what would happen if we get this line and paste it inside the wild loop to cut a line in part 30 00:02:19,970 --> 00:02:20,350 charm. 31 00:02:20,350 --> 00:02:25,690 You can set the cursor anywhere in the line and then in your keyboard. 32 00:02:25,990 --> 00:02:28,270 Press control x. 33 00:02:29,110 --> 00:02:30,790 Or command X. 34 00:02:31,830 --> 00:02:33,410 That will cut the line. 35 00:02:33,420 --> 00:02:42,180 And then you go here, make a new line and press control V or command V, and that will place the line 36 00:02:42,180 --> 00:02:42,990 in there. 37 00:02:43,920 --> 00:02:51,570 So now the question is, is this version better or was that version with that line there better than 38 00:02:51,570 --> 00:02:52,200 this one? 39 00:02:53,460 --> 00:02:57,540 If you run this version of the code, it will work the same. 40 00:03:03,810 --> 00:03:05,460 So nothing is changing. 41 00:03:05,700 --> 00:03:10,800 But is it still a good way to program like this? 42 00:03:11,220 --> 00:03:12,300 The answer is no. 43 00:03:13,080 --> 00:03:20,160 And that is because it is not necessary to have the variable declaration inside the wild loop. 44 00:03:20,460 --> 00:03:28,650 So this variable declaration will be executed multiple times because it is inside a loop and that is 45 00:03:28,650 --> 00:03:29,550 not necessary. 46 00:03:29,550 --> 00:03:33,900 So that will simply make your program heavier. 47 00:03:34,350 --> 00:03:42,030 Even though a variable declaration does not occupy heavy resources, it's still not the best practice 48 00:03:42,120 --> 00:03:43,610 to program like this. 49 00:03:43,620 --> 00:03:48,180 So we only have to declare the string once. 50 00:03:48,210 --> 00:03:52,080 Therefore, I'll just put it where it was here. 51 00:03:52,350 --> 00:03:55,500 You don't need to execute that line multiple times. 52 00:03:55,920 --> 00:04:01,560 You only put in the wild loop things that will be executed in cycles. 53 00:04:02,640 --> 00:04:12,030 Another experiment Try to change capitalized with title and run the program and see how the output changes. 54 00:04:12,030 --> 00:04:18,570 Enter it to to clean the room and see what we got. 55 00:04:18,750 --> 00:04:24,690 Clean the room with the first letter of each word capitalized. 56 00:04:25,200 --> 00:04:30,630 So the capitalized methods only capitalized the first letter of the string. 57 00:04:30,630 --> 00:04:33,810 So only C was capitalized in the string. 58 00:04:33,810 --> 00:04:39,060 But the title method finds all the words and capitalizes the first letters. 59 00:04:39,480 --> 00:04:42,090 So that's just another method of strings. 60 00:04:42,360 --> 00:04:46,260 And now you might ask, How do you know all these methods? 61 00:04:46,290 --> 00:04:52,640 Well, I'll answer you that question today in the Programming Tool of the Day. 62 00:04:52,650 --> 00:04:58,800 So in that video later today, I'll show you the secret on how to find the list of all methods that 63 00:04:58,800 --> 00:05:03,270 you can apply to strings and other objects. 64 00:05:03,510 --> 00:05:05,340 So stay tuned for that video. 65 00:05:06,620 --> 00:05:08,550 Two more small experiments. 66 00:05:08,570 --> 00:05:16,310 If you remove print and you just say to do the title, as you might guess, if you enter it to do, 67 00:05:16,790 --> 00:05:20,870 you will not get any output because the print function is not there. 68 00:05:21,410 --> 00:05:27,110 So let's get the print function back and do our last experiment. 69 00:05:27,140 --> 00:05:34,820 If you remove these two parentheses here, the parentheses of the title method, if you remove that 70 00:05:34,820 --> 00:05:42,050 and you run the script, you clean the room and what you get is, is this output. 71 00:05:42,740 --> 00:05:46,580 So this is simply saying that this is a method. 72 00:05:47,240 --> 00:05:53,780 But in order to get the output that a method generates, you need to use those parentheses. 73 00:05:54,350 --> 00:05:56,900 So these are always necessary. 74 00:05:57,620 --> 00:06:02,030 Keep that in mind and thank you for following the code experiments for today. 75 00:06:02,060 --> 00:06:02,990 See you in the next video.