0 1 00:00:04,841 --> 00:00:05,674 Hello, again. 1 2 00:00:05,674 --> 00:00:07,712 In previous lecture what we did, we created 2 3 00:00:07,712 --> 00:00:10,510 our newFile menu item 3 4 00:00:10,510 --> 00:00:13,570 sorry, we created our function for new menu item, right. 4 5 00:00:13,570 --> 00:00:15,750 And in this session, what we are going to do 5 6 00:00:15,750 --> 00:00:18,460 let me go back to our menu 6 7 00:00:18,460 --> 00:00:19,640 menu is here, right. 7 8 00:00:19,640 --> 00:00:22,180 We are going to create our function 8 9 00:00:22,180 --> 00:00:25,044 for this open menu item, okay. 9 10 00:00:25,044 --> 00:00:27,130 Here, what I will do, 10 11 00:00:27,130 --> 00:00:29,647 let's use comma and after that hit Enter, okay 11 12 00:00:29,647 --> 00:00:33,290 and I will say command equals 12 13 00:00:33,290 --> 00:00:35,980 self.parent.openFile 13 14 00:00:40,730 --> 00:00:41,563 Okay 14 15 00:00:42,560 --> 00:00:44,132 and now, what I need to do? 15 16 00:00:44,132 --> 00:00:47,770 I need to create this openFile function, right. 16 17 00:00:47,770 --> 00:00:48,880 Here I will come 17 18 00:00:51,470 --> 00:00:55,330 and here before newFile 18 19 00:00:55,330 --> 00:00:56,970 and I will say 19 20 00:00:56,970 --> 00:00:59,390 def openFile here 20 21 00:00:59,390 --> 00:01:00,670 what I need to use? 21 22 00:01:00,670 --> 00:01:03,983 I need to use also args, right, asterisk args. 22 23 00:01:04,930 --> 00:01:07,150 Okay and now here, what I need to do? 23 24 00:01:07,150 --> 00:01:11,470 I need to call my global URL variable, okay. 24 25 00:01:11,470 --> 00:01:12,540 And here what I will say? 25 26 00:01:12,540 --> 00:01:15,780 I will say URL equals now. 26 27 00:01:15,780 --> 00:01:18,090 What I need to do? I'm to use file dialogue, okay 27 28 00:01:18,090 --> 00:01:21,020 we already learned how we can use file dialogue, by the way. 28 29 00:01:21,020 --> 00:01:22,490 Here, I will say 29 30 00:01:26,610 --> 00:01:29,423 file dialogue and what I need to? 30 31 00:01:29,423 --> 00:01:32,890 I need to import my file dialogue, by the way 31 32 00:01:32,890 --> 00:01:35,510 and here what I need to do? I will go to the top 32 33 00:01:35,510 --> 00:01:37,200 and say 33 34 00:01:37,200 --> 00:01:40,256 from tkinter import filedialog 34 35 00:01:40,256 --> 00:01:41,900 okay 35 36 00:01:41,900 --> 00:01:44,183 and now I can use filedialog. 36 37 00:01:46,532 --> 00:01:48,375 Yes. 37 38 00:01:48,375 --> 00:01:51,483 URL equals I will say filedialog.askopenfilename 38 39 00:01:55,470 --> 00:02:00,000 okay, that one askopenfilename 39 40 00:02:00,000 --> 00:02:01,803 and after that here what I need to use? 40 41 00:02:04,780 --> 00:02:08,960 askopenfilename and here I will say initial directory 41 42 00:02:11,260 --> 00:02:13,740 okay, here it will be 42 43 00:02:16,110 --> 00:02:18,100 my current directory, okay 43 44 00:02:18,100 --> 00:02:21,170 and after that here I want to use title for my 44 45 00:02:23,520 --> 00:02:26,180 dialog window. okay, title will be 45 46 00:02:27,050 --> 00:02:31,360 Select a file to open 46 47 00:02:31,360 --> 00:02:34,200 something like that and also which property I will use? 47 48 00:02:34,200 --> 00:02:37,400 I will use also file types property, okay 48 49 00:02:37,400 --> 00:02:39,387 for the file types what I will say here 49 50 00:02:42,296 --> 00:02:46,525 file types, even, we can come here, okay and say 50 51 00:02:46,525 --> 00:02:47,358 filetypes 51 52 00:02:50,340 --> 00:02:51,173 equals 52 53 00:02:52,920 --> 00:02:55,990 parentheses and another parentheses here I will say 53 54 00:02:58,310 --> 00:03:01,900 Text file, okay, first of all, 54 55 00:03:01,900 --> 00:03:04,810 and after that here I will use comma 55 56 00:03:04,810 --> 00:03:08,440 and now I need to use extension for text files, okay 56 57 00:03:08,440 --> 00:03:13,070 and I will say star .txt, right 57 58 00:03:13,070 --> 00:03:16,470 and after what I need do also, I need to use another property 58 59 00:03:16,470 --> 00:03:17,630 and I will say here 59 60 00:03:19,480 --> 00:03:22,283 for this one I will say All Files, okay. 60 61 00:03:23,350 --> 00:03:26,880 And here I will say All Files 61 62 00:03:28,410 --> 00:03:30,780 and again here comma 62 63 00:03:32,150 --> 00:03:35,500 and asterisk 63 64 00:03:35,500 --> 00:03:36,887 quotes 64 65 00:03:36,887 --> 00:03:37,720 *.* 65 66 00:03:39,070 --> 00:03:42,470 Okay, I think it's fine now. 66 67 00:03:42,470 --> 00:03:43,670 Let me check it. 67 68 00:03:43,670 --> 00:03:46,923 Looks fine, okay, and here what I need to do now? 68 69 00:03:47,810 --> 00:03:50,630 Now we can use this URL variable 69 70 00:03:50,630 --> 00:03:52,788 to open up our text file, okay. 70 71 00:03:52,788 --> 00:03:54,840 What I need to do? I will use 71 72 00:03:54,840 --> 00:03:58,140 here try and except blocks, okay, 72 73 00:03:58,140 --> 00:03:59,680 and here I will say try 73 74 00:04:01,750 --> 00:04:03,923 and also, let's say except, okay. 74 75 00:04:08,730 --> 00:04:11,427 For now, let's say pass and here what I will say? 75 76 00:04:11,427 --> 00:04:16,230 I will use with open, right 76 77 00:04:16,230 --> 00:04:19,200 and I will open URL, right 77 78 00:04:19,200 --> 00:04:20,200 and what I need to do? 78 79 00:04:20,200 --> 00:04:24,090 If I open my file, I need to read it, okay. 79 80 00:04:24,090 --> 00:04:27,650 That's why here for the mode I will use r 80 81 00:04:27,650 --> 00:04:31,140 and after that here what I need to say? I say as file 81 82 00:04:31,140 --> 00:04:35,320 right and here before showing something 82 83 00:04:35,320 --> 00:04:37,660 I want to use only one function here 83 84 00:04:37,660 --> 00:04:40,670 self.txteditor.insert 84 85 00:04:40,670 --> 00:04:41,540 okay 85 86 00:04:41,540 --> 00:04:43,960 And from the first one 86 87 00:04:43,960 --> 00:04:47,270 1.0 and after that here what I need to use? 87 88 00:04:47,270 --> 00:04:50,170 I need to use file.read 88 89 00:04:50,170 --> 00:04:51,250 okay 89 90 00:04:51,250 --> 00:04:53,133 and if I run my application now. 90 91 00:04:55,330 --> 00:04:56,163 Run. 91 92 00:04:58,850 --> 00:05:03,850 Now here, for example, this is our existing file 92 93 00:05:05,170 --> 00:05:08,560 and now I want to try to open a new file. 93 94 00:05:08,560 --> 00:05:11,930 I will say file, open, alright. 94 95 00:05:11,930 --> 00:05:15,180 Here, our dialog window is here. 95 96 00:05:15,180 --> 00:05:16,914 Now I can open one of them, okay 96 97 00:05:16,914 --> 00:05:20,410 it doesn't matter, for example, that one. 97 98 00:05:20,410 --> 00:05:23,950 Hello, you see hello how are you Python is here 98 99 00:05:23,950 --> 00:05:28,700 But also the other text is also here, so what I need to do? 99 100 00:05:28,700 --> 00:05:30,570 I need to delete these guys, right 100 101 00:05:30,570 --> 00:05:33,970 and here before inserting 101 102 00:05:33,970 --> 00:05:35,980 I need to say here before inserting 102 103 00:05:36,820 --> 00:05:40,260 self.texteditor.delete 103 104 00:05:40,260 --> 00:05:42,060 and here I will say 104 105 00:05:42,060 --> 00:05:44,940 from the first one until end 105 106 00:05:45,880 --> 00:05:47,823 okay, and I will say END. 106 107 00:05:49,130 --> 00:05:52,050 Now if I try to run it again 107 108 00:05:53,640 --> 00:05:57,870 now it's okay, that one. This our existing file, right 108 109 00:05:57,870 --> 00:06:00,410 and now I want to open a new one. Open 109 110 00:06:01,400 --> 00:06:04,110 and let's use that one. 110 111 00:06:04,110 --> 00:06:06,310 You see hello how are you python 111 112 00:06:06,310 --> 00:06:09,550 and now it works. Also what we can do here... 112 113 00:06:12,700 --> 00:06:15,933 we can use here another title. 113 114 00:06:18,924 --> 00:06:23,160 For example, we can change title for our text editor 114 115 00:06:23,160 --> 00:06:24,560 and let me also show it. 115 116 00:06:24,560 --> 00:06:27,280 Also I want to show you something else. 116 117 00:06:27,280 --> 00:06:29,380 For example here... 117 118 00:06:29,380 --> 00:06:31,030 if I click open 118 119 00:06:31,030 --> 00:06:32,640 and if I say cancel 119 120 00:06:33,540 --> 00:06:35,550 this is also to do, what we need to do. 120 121 00:06:35,550 --> 00:06:39,310 I want to use here except look and I will say here 121 122 00:06:39,310 --> 00:06:43,530 return, okay, to do that and after that here what I need to do? 122 123 00:06:43,530 --> 00:06:48,120 As I said I want to change my title of my application 123 124 00:06:48,120 --> 00:06:50,210 and I will say self.parent 124 125 00:06:52,110 --> 00:06:53,613 Okay, dot title. 125 126 00:06:55,900 --> 00:06:58,650 Actually, so we can say 126 127 00:06:58,650 --> 00:07:00,400 self.title 127 128 00:07:00,400 --> 00:07:04,300 no, we need to say here parent, actually 128 129 00:07:04,300 --> 00:07:06,610 or here... 129 130 00:07:06,610 --> 00:07:08,293 Why is like that? 130 131 00:07:10,690 --> 00:07:12,860 self.title let's use... 131 132 00:07:14,320 --> 00:07:15,910 self.title 132 133 00:07:19,810 --> 00:07:22,390 Yes, we need to say parent but what's wrong here? 133 134 00:07:22,390 --> 00:07:25,120 I don't know. Title... 134 135 00:07:25,120 --> 00:07:28,350 and here let me say... 135 136 00:07:28,350 --> 00:07:29,183 Note 136 137 00:07:30,134 --> 00:07:31,940 Let me try it, okay. 137 138 00:07:31,940 --> 00:07:36,770 NotePad, and I will say here Now Editing 138 139 00:07:36,770 --> 00:07:38,550 something like that, okay 139 140 00:07:38,550 --> 00:07:40,750 and if I run my application now 140 141 00:07:45,010 --> 00:07:47,710 and here, file, open 141 142 00:07:48,610 --> 00:07:50,040 and I will open that one 142 143 00:07:50,900 --> 00:07:52,960 and you see now editing is okay 143 144 00:07:52,960 --> 00:07:54,993 but what I want to do, I want to 144 145 00:07:54,993 --> 00:07:58,843 display this file name, okay, the file I opened 145 146 00:07:59,860 --> 00:08:01,540 so how can I do that? 146 147 00:08:01,540 --> 00:08:02,940 Here... 147 148 00:08:02,940 --> 00:08:05,080 what I need to do is here, right. 148 149 00:08:05,080 --> 00:08:08,370 Notepad now editing and here I will say 149 150 00:08:08,370 --> 00:08:09,310 str 150 151 00:08:11,403 --> 00:08:15,080 Notepad Now Editing and here I will use 151 152 00:08:15,080 --> 00:08:16,420 plus str 152 153 00:08:17,960 --> 00:08:20,283 and self url.filename 153 154 00:08:25,470 --> 00:08:27,220 sorry, url.split 154 155 00:08:28,950 --> 00:08:33,160 and here I will split by slash, okay 155 156 00:08:33,160 --> 00:08:36,720 and here let's also use 156 157 00:08:37,830 --> 00:08:39,480 square brackets minus one. 157 158 00:08:39,480 --> 00:08:42,230 Why is like that? Let me here. 158 159 00:08:42,230 --> 00:08:44,610 First of all I want to show you something. 159 160 00:08:44,610 --> 00:08:47,500 Print out URL, okay, you'll understand why 160 161 00:08:47,500 --> 00:08:49,760 I am using split and also... 161 162 00:08:50,980 --> 00:08:54,453 inverse of my list I say URL, okay. 162 163 00:08:58,620 --> 00:09:01,748 So here I will use open 163 164 00:09:01,748 --> 00:09:05,153 and now our file name is this one, okay. 164 165 00:09:06,150 --> 00:09:10,500 and you see now NotePad Now Editing is our file name 165 166 00:09:10,500 --> 00:09:13,853 and here also Python returns for us. 166 167 00:09:15,010 --> 00:09:17,050 You see that one. This is Python. 167 168 00:09:17,050 --> 00:09:21,010 This is URL variable. But what we are doing? 168 169 00:09:21,010 --> 00:09:24,651 We are splitting our URL by slash, right 169 170 00:09:24,651 --> 00:09:27,810 and the first one will be that one, okay. 170 171 00:09:27,810 --> 00:09:29,792 This is a list, it will return us a list. 171 172 00:09:29,792 --> 00:09:32,050 Even, let's say here... 172 173 00:09:32,050 --> 00:09:32,883 split 173 174 00:09:34,367 --> 00:09:36,110 this is split... 174 175 00:09:37,400 --> 00:09:39,813 by slash, okay. 175 176 00:09:42,890 --> 00:09:46,110 Now I want to open another file 176 177 00:09:46,110 --> 00:09:48,490 and let's use that one. 177 178 00:09:48,490 --> 00:09:52,290 Okay and I will close it. Let's check our list. 178 179 00:09:52,290 --> 00:09:55,890 You see this is our list, the first item is that one 179 180 00:09:55,890 --> 00:10:00,380 second one is that one and our file name is that one. 180 181 00:10:00,380 --> 00:10:03,643 So if I want to use that one, what I am to use here? 181 182 00:10:04,892 --> 00:10:08,940 I need to use reverse of my list, okay 182 183 00:10:08,940 --> 00:10:11,760 and the first, that one, that means 183 184 00:10:11,760 --> 00:10:15,920 I will get my name of my file, okay. 184 185 00:10:15,920 --> 00:10:20,920 This is how we can use openFile dialogue for our applications. 185 186 00:10:22,840 --> 00:10:24,713 For now let's all see in the next.