WEBVTT 00:00.440 --> 00:04.220 You can do just about anything with each item in a for loop. 00:04.250 --> 00:10.610 Let's build the previous example by printing a message to each magician and telling them that they performed 00:10.610 --> 00:11.810 a great trick. 00:12.020 --> 00:19.550 Now, after that, inside the form, we will use the print magician format here again. 00:19.850 --> 00:22.220 So we will use a string format. 00:25.020 --> 00:28.560 And here we will magician that title. 00:28.890 --> 00:30.780 And after that we will use. 00:30.810 --> 00:36.420 Yeah, that was a great, great, great trick. 00:36.420 --> 00:36.930 Right? 00:36.960 --> 00:37.770 Trick. 00:38.100 --> 00:40.620 And the only difference in this code here. 00:41.460 --> 00:48.570 Here is where we compose a message to each magician, starting with the magician's name the first time 00:48.570 --> 00:49.380 through the loop. 00:49.380 --> 00:51.570 The value of a magician is Alice. 00:51.570 --> 00:55.590 So Python starts the first message with the name Alice. 00:55.740 --> 01:03.390 The second time, though, the message will begin with a David, and the third time the message will 01:03.420 --> 01:04.830 begin with Caroline. 01:05.910 --> 01:06.840 And the output. 01:06.840 --> 01:10.890 This is the personalized message for each magician and the list. 01:11.310 --> 01:14.490 You can also write as many lines of code as you like in the for loop. 01:14.760 --> 01:21.840 Every indented line following the line for magician in magicians like here. 01:24.380 --> 01:27.110 Considered inside the loop. 01:27.810 --> 01:33.450 And each indented line is executed once for each value in the list. 01:33.480 --> 01:37.560 Therefore, you can do as much work as you like with each value in the list. 01:37.590 --> 01:44.070 Let's add a second line to our message telling each magician that we are looking forward to their to 01:44.070 --> 01:45.120 do their next trick. 01:45.120 --> 01:49.500 So print here f format again. 01:49.500 --> 01:56.130 And now without these braces I or the. 01:56.800 --> 01:57.820 Weavers. 01:58.240 --> 02:06.010 Weavers can not wait to see your next trick. 02:06.270 --> 02:07.300 Dear. 02:08.230 --> 02:16.630 And after that we will enter the magician Magician title because as you remember, our magician names 02:16.630 --> 02:18.820 is written an underscore. 02:18.820 --> 02:22.120 So that's why we're going to write titles here. 02:22.630 --> 02:25.270 So magician dot title. 02:26.250 --> 02:27.060 That's it. 02:27.420 --> 02:29.940 And after that, we will use a new line. 02:29.940 --> 02:30.720 So. 02:35.310 --> 02:38.070 So because now let's rent. 02:38.370 --> 02:39.150 That's it. 02:40.810 --> 02:44.470 Because we have invented both calls to print. 02:44.500 --> 02:48.790 Each line will be executed once for every magicians in the list. 02:48.790 --> 02:52.300 And here the new line here. 02:52.720 --> 02:56.560 The new new line here in the second print. 02:56.740 --> 02:57.580 This is the print. 02:57.610 --> 02:59.020 This is the first print. 03:00.000 --> 03:01.200 This is the second print. 03:03.050 --> 03:03.920 This new line. 03:03.920 --> 03:10.640 The second brand calls insert a blank line after each pass pass through the loop. 03:10.850 --> 03:17.570 So here one new line, two new line, and the third new line is at the bottom here somewhere. 03:17.570 --> 03:18.050 Here. 03:18.850 --> 03:25.270 So this creates a set of messages that are neatly grouped for each person in the list here. 03:26.480 --> 03:29.630 You can use as many lines as you like in your for loops. 03:29.670 --> 03:34.760 In practice, you will often find it useful to do a number of different operations with each item in 03:34.760 --> 03:35.300 a list. 03:35.330 --> 03:38.420 When you use a for loop. 03:41.630 --> 03:44.890 So what happens once a for loop has finished executing? 03:44.900 --> 03:51.800 Usually you will want to summarize a block of output or move on to the other work that your your program 03:51.800 --> 03:53.000 must accomplish. 03:53.000 --> 03:59.540 Any lines of code after the for loop that are not indented are executed once without repetition. 03:59.570 --> 04:06.380 Let's write a thank you to the group of Magicians as a whole and thanking them for putting on an excellent 04:06.380 --> 04:06.770 show. 04:06.770 --> 04:09.530 So to display this, a group message. 04:09.650 --> 04:14.900 After all of the individual messages have been printed, we place a thank you message after the for 04:14.900 --> 04:17.360 loop without indentation. 04:17.750 --> 04:24.260 So now we just write Without indentation, we will press on the backspace. 04:24.260 --> 04:24.920 That's it. 04:24.950 --> 04:27.530 Now signs are crucial. 04:27.530 --> 04:28.970 Is here somewhere. 04:28.970 --> 04:33.530 Here we are out of the loop so we are not in the loop. 04:33.530 --> 04:39.770 So whenever whatever we write here, it will not count as loop here. 04:40.500 --> 04:41.070 Okay. 04:42.480 --> 04:43.860 So that's it. 04:43.890 --> 04:45.300 Now print. 04:46.350 --> 04:49.590 Thank you, everyone. 04:52.200 --> 04:59.280 Everyone for watching and especially for magicians. 05:02.280 --> 05:02.760 Split. 05:03.720 --> 05:05.370 Especially for magicians. 05:06.160 --> 05:09.310 That that was a. 05:10.400 --> 05:12.500 Spectacular spec. 05:13.550 --> 05:14.840 Tacular show. 05:16.430 --> 05:17.240 That's it. 05:18.260 --> 05:18.740 Here. 05:20.800 --> 05:22.360 Now let's run our code again. 05:24.680 --> 05:25.900 That's it. 05:25.910 --> 05:26.980 This is how it works. 05:26.990 --> 05:34.130 The first two cards to print are repeated once for each magicians in the list, as you saw earlier. 05:34.130 --> 05:41.570 However, because the last line is not indented, it's printed only once. 05:42.050 --> 05:42.560 Here. 05:44.310 --> 05:47.340 It's printed only once. 05:47.670 --> 05:48.240 Look at this. 05:51.970 --> 05:52.570 That's it. 05:54.970 --> 05:55.720 And. 05:56.940 --> 05:59.910 This is the output that we wrote here. 05:59.910 --> 06:05.430 And when you're processing data using a for loop, you will find that this is a good way to summarize 06:05.430 --> 06:09.330 an operation that was performed on an entire dataset. 06:09.360 --> 06:14.220 For example, you might use a for loop to initialize a game by running through the list of characters 06:14.220 --> 06:16.620 and displaying each character on the screen. 06:16.620 --> 06:23.160 And you might want to, you might want then write some additional code after the loop that displays 06:23.160 --> 06:23.580 a play. 06:23.580 --> 06:24.150 No button. 06:24.150 --> 06:26.550 After all the characters have been drawn to the screen.