Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,000 --> 00:00:06,210 Great, before we go ahead and learn about the Python basic such as variables, 3 00:00:06,210 --> 00:00:11,550 functions and so on I think it's good that's you understand how a Python 5 00:00:11,550 --> 00:00:15,389 program looks like. This is especially good if you have never programed before. 7 00:00:15,389 --> 00:00:20,490 languages you may have three kinds of 9 00:00:20,490 --> 00:00:25,080 programs and I'll tell you why we have three kinds of programs so you may have 11 00:00:25,080 --> 00:00:30,029 a program with a command line interface such as this one here. You may have a 13 00:00:30,029 --> 00:00:36,090 program with a graphical user interface such as this one here, so it's a desktop 15 00:00:36,090 --> 00:00:40,680 application and you may also have for web applications such as this one in 17 00:00:40,680 --> 00:00:46,649 here that runs on the browser and it can be accessed through the internet. 19 00:00:46,649 --> 00:00:50,430 Now the first thing you should know is that all these programs they are based on a 21 00:00:50,430 --> 00:00:59,190 dot py file such as this ones in here so this is a Python file and whenever 23 00:00:59,190 --> 00:01:04,710 you start building something you should write your code in this script I which 25 00:01:04,710 --> 00:01:11,760 looks like this one here, anyway and then once you have that script you can either 27 00:01:11,760 --> 00:01:19,200 run it through the command line interface such as this one, script 4.py 29 00:01:19,200 --> 00:01:24,780 Execute it and then you communicate with the interface so your program your 31 00:01:24,780 --> 00:01:31,920 Python program is asking you to enter some letters in there and so enter V V 33 00:01:31,920 --> 00:01:39,119 and c for consonants consonants. L or C, anyway and get some output in the command line 35 00:01:39,119 --> 00:01:46,799 Interface. Now when do you use such a program? Well, you do this program if you not 37 00:01:46,799 --> 00:01:51,509 planning to distribute this program to normal users, to people who don't know 39 00:01:51,509 --> 00:01:56,909 programming so I use Python, the Python program which I have 41 00:01:56,909 --> 00:02:00,450 already installed and I show and I'll show you how to install that later so I 43 00:02:00,450 --> 00:02:05,219 use Python and that points to the Python script so to the Python program to execute 45 00:02:05,219 --> 00:02:10,080 the program. Now, normal users they don't have Python installed or they don't know how 47 00:02:10,080 --> 00:02:14,160 to execute a Python program and that's why you have 49 00:02:14,160 --> 00:02:19,920 graphical user interface there such as this one, or browsers such as this one 51 00:02:19,920 --> 00:02:26,730 in here and yeah why don't you use desktop application such as this? Well you'd 53 00:02:26,730 --> 00:02:31,350 use that if you just want to distribute your program to a specific number of 55 00:02:31,350 --> 00:02:36,870 users let's say you work on a company and you will want to build a 57 00:02:36,870 --> 00:02:42,360 program for the employees of a company to do specific tasks and so you could 59 00:02:42,360 --> 00:02:49,560 build this program and it's possible to create an executable file out of your 61 00:02:49,560 --> 00:02:53,880 Python program. This particular one is A dot exe file for Windows, it runs on 63 00:02:53,880 --> 00:02:58,410 Windows as a standalone program but you can also create dot app files for Mac 65 00:02:58,410 --> 00:03:02,940 computers and then the user they don't need to have for installed. They would 67 00:03:02,940 --> 00:03:10,410 simply execute the dot exe file and they can use the application so yeah, that's 69 00:03:10,410 --> 00:03:16,350 the application. We will be building all these three applications in the course so the 71 00:03:16,350 --> 00:03:21,209 command line interface, the web application and the desktop based 73 00:03:21,209 --> 00:03:26,550 application and then you have web applications such as this one you here. 75 00:03:26,550 --> 00:03:32,850 So when would you use a web application? Well the web applications are best when 77 00:03:32,850 --> 00:03:38,400 your audience is large so basically you may want as many users to your 79 00:03:38,400 --> 00:03:43,410 application as possible so for instance what we have here is this is a 81 00:03:43,410 --> 00:03:49,739 geocoder service. It geocodes, it converts addresses to latitude and longitude 83 00:03:49,739 --> 00:03:56,700 coordinates so what users can do here is they can choose a file, so s CSV file and 85 00:03:56,700 --> 00:04:01,950 then you calculate latitude and longitude and send them back as csv file 87 00:04:01,950 --> 00:04:10,230 with those values so a web application in simple words can be for anyone and this 89 00:04:10,230 --> 00:04:15,480 also is based on dot py files on the background so I will show these files 91 00:04:15,480 --> 00:04:21,660 for now we're going to build all these applications as I told you so, 93 00:04:21,660 --> 00:04:26,660 yeah that's about this lecture I hope you have a clear idea now 95 00:04:26,660 --> 00:04:31,700 Of what a program, a Python program looks like and what you can do with Python as well. 97 00:04:31,700 --> 00:04:37,460 If you have questions please feel free to ask them in the Q&A section, so in 99 00:04:37,460 --> 00:04:42,170 the discussion area of the course and yeah I'll be happy to help you. Hope you 101 00:04:42,170 --> 00:04:46,330 enjoyed this and I'll to talk you in the next lectures. 6104