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COSC 1306 Introduction to Programming and Computer Science - Chapter11_Files_PyCharm
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00:05 our meeting is being recorded. So on. We're gonna post this
00:12 , um, to the class later . So if you have any any
00:18 of question, you'd rather be more public than just wait for the end
00:22 this meeting and you can ask her the recording time anywhere. Um,
00:30 to the second last class official for semester. I hope you're all doing
00:36 and hopefully getting a little bit adjusted the new life. And we're trying
00:42 do our best toe finish this course hopefully you learn most of the
00:50 So before we get started on the part a few announcements which I've already
00:57 on the mail on the message world as an announcement on blackboard but really
01:09 we did post midterm. The second from essentially it is the same one
01:15 last year. So you did not a second midterm this year for practical
01:21 . But the style off these midterms the finals is generally very similar,
01:27 you should try it out. The yourself and very soon will boast a
01:35 so you can grab yourself. And you have questions or concerns about
01:39 Let us know. But it's really your practice. And since I think
01:46 know 70% of the content and for final, maybe not 50 60 something
01:52 covered for the midterm, too. that should give you a handle on
01:58 you stand. Okay? As we're on, the basic rules up that
02:05 you have an easy question, try , put it on chat, and
02:10 we'll get to it. Um, you have something quick to say,
02:16 can open your microphone and just say . Andi, if you,
02:22 what is this feature? Raise your . If you want to talk a
02:27 and waiting for your turn, just click that raise your hand and we'll
02:33 out and you're welcome to keep your on or not. That's up to
02:38 . Okay? Eso back to We just posted the midterm. It's
02:44 for self assessment, trying to use like that and give you a pretty
02:49 handle. Where you stand final is soon. It's in two weeks.
02:56 also just to realize and yes, knew it, but so you probably
03:01 a lot of questions about the Um, I don't have all the
03:08 yet, but I will have very , but basically is gonna be an
03:13 off course and is going to be blackboard. Some details are still being
03:20 out. It is going to be comprehensive. A certain include everything with
03:29 emphasis on the, um on the after the first midterm. And the
03:37 of the content really early in the will not be included. We
03:42 uh, send that out soon. . Essentially all the fight on that
03:50 have learned exercises that will you have control structures if the house while for
03:59 well as some data structure, strength and dictionaries that air coming up eso
04:07 probably stomach. You're wondering. Is gonna be open book, closed
04:10 And of course, we all understand difficulty off having a closed book exam
04:16 the, uh, in an online . However, the only thing I
04:22 tell you is that it may not that much. Even if you have
04:28 open book. There won't be enough for you to goto the you
04:33 the core content off. What it read up and then tried once or
04:38 question. So you have to be . And my bastard wise is there
04:43 a cheat sheet that we have a You can make your own cheap shit
04:48 quickly summarizes the syntax and the basics things and refer to that it's gonna
04:56 employed few during the exam to refer content is gonna be eso think off
05:03 . It is kind of a closed , But you can have a little
05:06 shoot or you're not with you. when unexamined, close, open book
05:13 be a problem because people spend so time trying to refer to things they
05:18 think can actually do more worldly than word out. If it was open
05:22 so short on it being closed, with some notes on your side.
05:28 in a couple of days, the rules will be clear. Um,
05:34 in terms of content for the we're gonna cover files this week,
05:39 there's one topic left, which is reading assignment for this week. That
05:43 dictionaries, and that's as much as content is going to be.
05:49 we're going Thio release your last assignment week. Sooner than usual, this
05:56 assignment will talk about it. It's very hard is just thinking of things
06:01 differently. And that will be And we'll find some time next week
06:08 toe talk about the final and the and so on. Um, any
06:14 on the's logistical aspects? Well, not, we'll get back. If
06:26 questions come to your mind during the today, just hang on to them
06:32 we will address them at the end the lecture to So today's talk is
06:40 be two pods. Um, I'm to cover the first part. That's
06:47 files. And but you're the ts cover the second part. That's about
06:53 by charm. Um, let me get to the lecture and then
07:02 you understand better why? We're doing this way. Okay, so I'm
07:07 Thio, get Thio some slides and screen. Okay. All right.
08:02 . I lost the chat window, . Okay, so there's a question
08:14 the next assignment, but by chump online book will get thio.
08:22 eso The short answer is that we would like you to do it on
08:30 . Um, but if you you do it in the book and the
08:37 lessen the luxury to be more clear we're doing that. Any other
08:50 Okay, Uh, keep losing the window, Professor. I can follow
09:04 . They're gonna live in a Just let me just one more
09:08 And that sounds good. So why don't you tell me if
09:11 uh, anything we need to but, uh okay, so
09:26 So, back to files. Let do one more thing. The different
09:33 from the restaurant's. OK, so are the topics we covered in terms
09:39 general announcements and information. We're We're gonna first part is gonna be
09:46 files in general. And the second is gonna be about, um,
09:53 charm and we'll cover the files, then then we'll talk about why we're
10:01 this. Okay, So, to topic, finally, so far,
10:08 you've done in this class, the import has bean from the user on
10:15 writing has bean to the console. ? So you read something which is
10:26 provided by the user, and then right. Um however, that is
10:33 as a learning tool in the real as you can imagine, what real
10:38 governments manipulate fires. What do you in the real world to deal with
10:43 ? Uh, should not. And of that is in a file
10:49 People don't remember those stuff. Don't those stuff and that that just lives
10:54 file. So, basically, in life, just about all computer programs
11:02 take input from files the program as coming in because audio radio would not
11:13 the planet output either files or it some action, right? Action might
11:21 something like turning on or off your star, your computer even and things
11:30 that. So build world at the that the program does is really look
11:36 file analyzed that I manipulate data. with the results back in the
11:42 our our takes, um, actual action. So we need to take
11:48 close look at files because they're really now, with all kind of familiar
11:54 files, we see them on our s so we know where the file
11:59 . So it's on M marathon before can do anything with a file.
12:06 must for planet. Uh, open with its name. And once you
12:16 a file, get a qualified Yeah. So a fire manipulation
12:27 It starts with something like this. Because open my five text or whatever
12:36 is. So this is a file you are familiar with. Open is
12:40 standard called and And that and the all future reference toe fire data is
12:48 five handle you don't have Everything is and which can be any variable.
12:54 doesn't have to be called five. that Z a demonic you could actually
13:00 on. And then all the daughter be referred to as a sex.
13:11 , so opening fires and buy Um, we just saw this statement
13:28 the previous slide. Five hunger equals file name and then read the basic
13:35 to open a file called Solomon. it for reading. That's probably the
13:41 common use off the fire. the file opening version off opening that
13:50 was the most. Of course, has to write these files to,
13:55 you have another call call which looks the same. But instead of read
14:01 have w here. So this one saying I'm opening a file all file
14:06 and use it for writing for reading for writing. And generally you'll do
14:12 of those. And when you're done the program, you're done with your
14:16 . You're you're done with your It's good practice to cross the
14:21 And, um, why close Uh, so another person cannot use
14:28 file hunting. You close it. it's sort of when you're opening a
14:33 for reading or writing your kind mocking it, so eso unlock it
14:44 closing it, and you're done the more time Variable file Handle Raptors to
14:51 content. Once you make this you only have to deal with the
14:55 file handle for for the and in program. So way saw modes in
15:10 can be opened, the lead mode the right mode. There is also
15:16 mode, and, uh, the not don't know, worry to mind
15:21 you don't remember it. That's but it slipped enough so for reading
15:27 what can you do with the So let's just not look at the
15:32 modes you can read a file you read from a file. You can
15:39 from a file, write to a , and then you can. All
15:43 . All right. Means, what you do when someone asks you to
15:48 to a file on Duh. The . The file already has stuff.
15:55 there are rules on what you can , and and the other one
16:00 What do you do if someone You are to read a writer
16:07 Are you ask? Fight on to a writer file on the fight doesn't
16:12 . Okay, so those are the to think about in terms of the
16:17 off the read, write and end . So when you're in read,
16:25 , you have are in your open . Can you eat the pile?
16:30 course you can. Can you write fire? No. Can you?
16:34 . No. Create missing fire. what does it mean? If you
16:40 to read a file and that file not exist, what should happen is
16:50 , way would, uh, There's you can do, right? The
16:56 is saying read some file. That does not exist, so there's nothing
17:01 can dio you will just, so a narrow right. There's nothing
17:09 to do it. So this would an error. If it happens,
17:14 . So now let's get through a right in the file. Right.
17:24 you're trying to read a file, not gonna work, you open the
17:29 to right not to read, so try to read it. It is
17:33 throwing error. You can simultaneously be and writing from the same file,
17:39 ? The file. Of course we . That's the whole point off the
17:43 operation. Can you? All Yes. So if there is already
17:49 file, you open it to try , you will lose the content that's
17:54 there in the file. And um, you start a flash,
18:01 will start. You start essentially, becomes an empty five. And whatever
18:08 write at some that point on is would be on the fire. Create
18:13 fire. So this is interesting. you know, you say I want
18:17 right to the fire. All, um, you back next and there
18:24 no file called Knew that text. in this case, since writing is
18:34 something in this scenario. So you actually create a file. You would
18:41 a new file calling you that tax start writing into it. So if
18:46 give it a final name, if give a program to find them too
18:49 toe the file doesn't exist, it come up with a new file and
18:53 that happen. Yes. So that's . And the final one is,
19:02 the end? The idea is that we saw is essentially cleaning out the
19:09 and starting to write again. It sense for us to have an operation
19:14 you add existing files. So in , the rules to each other,
19:23 , answer is notary. We're Yes. All right. No,
19:31 means you're not gonna all right, gonna just gonna add at the end
19:36 It's okay to have something in the of the file. And,
19:41 and also, if the file is , it will just create a file
19:47 right basically arrived and a friend of same set. If there is already
19:54 in the file that it's all written with, uh, happened with with
20:03 . And you just added to the in the thing. Let me just
20:09 here for a second. Just we this. Yeah. Yeah.
21:15 I have my check Window. Nine . Anybody has a question? Any
21:22 so far on? Well, more than Okay, Okay, so now
21:55 question is, where are these Right. You say open something.
22:00 does it exist? How do you it? Where do you What names
22:05 you put in? If you want read or write a file? Of
22:09 , even now that these files exist your computer, what does it mean
22:14 say that exist on your computer? , that usually means the people.
22:20 means your hard drive or it can flash drive. This is all of
22:24 computers. Storage, stable storage, the memory, but started, which
22:31 usually a hard drive with a flash . And within that the hierarchically organized
22:36 folders and directories. So when you thio, give off, I'll I
22:42 for reading. You need to specify in the computer that is. Suppose
22:48 looking for a file called constitution dot . Now, you can't just open
22:56 file constitution that text because there might 55 on your computer that have the
23:02 name. What is like on a to dio? So what? You
23:07 todo something like before, Uh, name off the fire. And there
23:14 a Siri users just for industrial That tax that's one with from beginning
23:20 friends to get the whole file whether it's on a Windows machine.
23:25 you right click on the file and properties, you'll get this cat like
23:31 . And, uh, you can give a delicate part. What?
23:38 that means is that this is mistakes . But I suppose I'm already in
23:47 same folder. My program is running this part off the bat, that
23:54 my program is running from my desktop that iss I can only say,
24:00 for file constitution, that tax, within the failure that I'm working
24:06 there is only one that can be one constitution that tax. So it
24:10 That's called a little file, from where you are, this is
24:14 path is just, uh you this concision and that say, if
24:18 will, you have that would be need to adjust your constitution that we
24:24 . Um, if you were she . If you are in this spoiler
24:35 to run a program from this then you would need to give this
24:40 bus stop flash constitution that TSC so can have a full pat. Or
24:44 can have what's called a relative path to the fire some beetles,
24:51 Sandusky vehicles, for example. You'll that, uh, in your
25:00 when you refinement, you use this off slashed on dawn, the best
25:07 when you try to look at it the school s. You may see
25:11 like this. Those little things you tow work out. But the basic
25:16 is like this. So another way think off it is a five structure
25:24 the whole your hard drive. Not you should be my convention, The
25:32 our directory on Windows machines is called Seas. It's the C drive,
25:37 within that there's a whole bunch of , and one of those holders is
25:44 . Others may be on the APS and things like that, And within
25:50 Jesus folders, there might be a bunch of man's John Mary and this
26:00 subdirectory. And within that there is subdirectories. But there is one called
26:09 . And within that stop, that , uh, um the file that
26:18 send constitution that Texas. So there's all over the place. All these
26:25 , subdirectories have their files. And , what we have to specify is
26:33 how do we get to this from beginning? So this fact here is
26:39 and users and just file then desktop then call. So that is the
26:46 . That is what has to be here for the computer to Mom.
26:52 to look for the file that your are asking for now, in the
26:57 half of this lecture and a jury gonna use the actually demo some of
27:04 in the context off John. So any questions at this point?
27:17 but I can see chap window. can't see anybody. It is in
27:21 hand right now. So site something you have a question. Okay.
27:34 far we saw that you can open file a certain way, and,
27:39 um, then you gotta file But then what do you do with
27:44 ? Right, So we've already seen with a fine handle. You could
27:49 this file and we want to eat , uh, even and read
27:55 So the simplest way off leading a is affect, not read. So
28:03 the content equal to file handle, is like think of final handle as
28:08 name off the file inside your So fine handle that read. And
28:14 this point, content will will have strange which is the entire file.
28:22 it could be 10 character, 100 . It could be, you
28:25 10,000 characters. It could be a book, just a strange. And
28:30 you try to print it, we'll just get the whole thing painted
28:35 a string, and after that, should close it. Now you're wondering
28:41 can let the whole book be a Essentially, the, uh, you're
28:49 one line to the next is itself character, the which is called new
28:54 . So if you have a book 100 pages off 1000 lines, you
29:01 something like that. Bind one off content and then you have this new
29:10 character. It's not bigger than Um, highlighting it and then you'll
29:14 line to and then you'll have the . But this is also a
29:19 so you can keep going down to three. So the whole thing here
29:25 just one strength as a data And this, uh, will get
29:31 the whole string when you plant it still see lines because you're printing program
29:37 interact at these new lines and Hey, I need to put a
29:41 right here. Make sense. Any ? So far? All right,
29:54 this is one way the thing to is fx dot reid is one way
30:00 read a file. There are some ways. So you have this
30:07 This part is the same. This is the same. Uh,
30:11 instead of read, we have dark lines. Okay, So what this
30:19 is, uh, on it reads file as a list off strength.
30:26 previous operation ratted as a single strength each representing one line in the
30:32 Remember, we said that the way works is its line one and new
30:40 line, too. New line. three lines. 23 for all.
30:52 by new lines. when you reuse lines, then it creates a
31:00 Okay. And the first element of list is a string line, One
31:05 element of the string line to that of the string Line three and the
31:10 element of the string Line four and on. So it gives us a
31:16 off strength. So if you wanted print it, we would say something
31:20 this is the best way to blanket airline in lines lines is now,
31:26 not a strength, as is the previously. And you can print everything
31:32 one line at a time. And have complete control. For example,
31:37 this strange that you want Thio relying us. Um, I don't
31:43 Um, I or something. Then will have every line high at the
31:50 of it so you can find the anyway. You get the same
31:54 Each line is separate strength in a . Okay, um, there is
32:04 more way off reading the file, is read line. So previously in
32:13 attention in the previous one, it read lines looked like this. And
32:19 one is really drying. They look similar, but the difference is very
32:25 . Or with the red line, will read one line at it.
32:32 if you what's the line? One 2 500 that we'd line line miracles
32:37 find online physical them as your asses expect? If you're program had a
32:46 than new lines line and new line , then new line, then time
32:57 would be the first one. Line would be the second one. Line
33:00 would be the third one. So get one line at a time.
33:03 can keep reading. Now think for second. Suppose you wanted to read
33:10 entire file in this faction? Of . Uh, first of all,
33:16 don't know how long the file and the second is you do
33:20 um, I want to be The file is 1000 lines. You
33:25 want to be writing the statement lineman to line three so you can read
33:30 a file until the end with a loop. So the goal here is
33:39 you want to read the file line line after line after line and you
33:44 to stop when the file ends so the tricky thing here is How do
33:48 know that while has ended? So is what you do. Line equals
33:58 lines. This is gonna give you first line and then wild lines.
34:06 this may be a little country and , but over here, this will
34:12 if it is anything but empty. why line is true? As long
34:23 the valuable line has anything in then you see a print line.
34:27 you say lying equals read line So it will go back. Read
34:34 to go back here. Need line . Go back here and so
34:39 Finally reached the end of the Okay, When you reach the end
34:45 the file line equals f h dot line return an empty, empty
34:53 There'll be nothing. And when that is empty, this is treated
35:01 false. So why line will be when the string is empty and therefore
35:08 white luke will and you'll close the . Okay. Um right. So
35:20 all the, uh, items in wilds that read a few things that
35:29 is in trouble when you're using the . If the file doesn't exist,
35:35 the final may exist. Your fact not correct. This happens a lot
35:39 , especially when we knew and I through an error. So if you
35:46 a crazy error when you're trying to a file, then most likely reason
35:51 that it cannot find it. Because you fight the name incorrectly or the
35:57 incorrectly. It has to be that to extracting where the violence of the
36:03 , um remember, by default, contents of the file is always that
36:08 a strength. Now the file itself be anything, right. So the
36:14 could be a cable, you C a C comma separated. It's
36:20 a table of things, maybe from or something. But those wagon as
36:28 string. So you need to do conversion, so it could be a
36:33 know, a whole bunch of integers the file there will be read as
36:36 strength, and then you need to the broadcasting whatever is needed to get
36:42 act of information you want. But into the file and coming out of
36:46 file, everything is just a strange , remember to close the file.
36:53 you're done in your program, you be, you know, writing a
36:59 and then maybe wanting to read it . If you're writing a file,
37:03 close it. Then you'll get Arabs you try to read it. So
37:08 good habit. Close the file once are done and better than we have
37:14 about. Yeah, text file. everything and most of what goes on
37:21 is by Khan is as a text , I think, for the for
37:25 purpose of the scores on Lee, , islands that we will be looking
37:30 this textiles, which is the that's anything technique converted to a tax
37:34 So that's not really a limitation, saying that everything is that as a
37:38 , everything is written as a strength not not a significant limitations on what
37:43 can prove. It just means that need to provide conversion before yes,
37:50 right name or after reading as Yeah, any questions on read
38:04 just a little bit more than on other up. We can do
38:09 At least the one that we would will be writing to a file.
38:14 is actually simpler than the reading in of the diversity that's available,
38:23 to write a gator. So we the fire, and the difference is
38:31 the open statement is the same, instead, off are you have w
38:36 right? Then we use the right . Through what data on the
38:43 So the only market we're gonna use simply right. And here is a
38:54 stand. One thing you should close file now. The string is simply
38:59 to the end of the file Okay, So s so it's very
39:04 . You just keep writing and the keeps getting longer and longer. So
39:07 write your first right is here. comes right after that. It comes
39:13 that, and so on. Another is one more time support you
39:19 You want toe right lines into a , right? You may even have
39:26 table and you want to write one at the time. It's your responsibility
39:31 communicate that you get a its Good on your line. You like
39:39 new line and so that the person will know when the line starts
39:45 for example, like percentage long as leading program knows that the pieces that
39:53 writing are separated by that character. another program to get it. But
40:00 , as far as my time is , the right is just filing one
40:04 after another. And the elephant. have just one man strength.
40:13 so there were things to worry While writing a file already exists,
40:22 will be really So you have to careful that there was something important.
40:29 by mistake, you put that file in the right at file is gone
40:34 , uh, one more time. it doesn't, it will be
40:39 So if you made a typo, meaning toe. Actually, your
40:45 All right. A certain file, you give a different name on the
40:50 file will be created. So you make it. I think Miss Take
40:54 the writing file them. If you a mistake, the file will be
40:59 while name you give it. So you are beginning to give it a
41:03 name and give it a wrong name You wanted to give it constitution and
41:12 mistake you voted the work asi Constitution you think everything will work beautifully that
41:20 day you'll be looking for this and then we're nothing there because what
41:25 type for us with the title with small C and that would be the
41:29 that would exist. So we covered already. The second point, the
41:35 method takes on the strings. That . So you it's your responsibility as
41:40 programmer to make sure that if you a bunch of anything, it's converted
41:44 a string before it. Zits And one more time. It's a
41:50 practice toe. Right. Um um , close the fire. Okay,
41:59 , in some way for this section the talk is, uh, for
42:04 right, um, you know, have a stranger's added to the end
42:11 the fire. Does the right operation and returns a strength? The whole
42:18 is return has a strength. Right . That's added to the end.
42:24 . The whole file is returned as strength read line. The whole fire
42:35 read? Sorry. This will lead . I'm sorry and read lines.
42:42 will get one line returned. So, uh, that's that's actually
42:54 content of this part of the lecture , uh, transition to the next
43:00 . That any questions so far, get to my charm and everything in
43:05 a minute. Any questions on the leader? Right? Operations either diapered
43:13 speak up. Yeah. Okay. if any questions come to mind,
43:27 can keep typing them. So I'm start, uh, you know,
43:33 on eso before we get to the . So so far in this
43:38 you use the simple, uh, simple pipe on interferes in their own
43:46 . Okay, so one off the of that is that it is not
43:52 good way to work with files. because in that interface you can work
43:58 files that are in the room And but you cannot write your own
44:03 with their own fire. And it of makes sense, because if this
44:06 just, uh, little books with with them, you know, with
44:13 examples and some bulls to help you , And also we did not want
44:18 dio get into We did not insist you get into a serious programming environment
44:27 you have some handle on the So if you're not trying to solve
44:31 problems at the same time. So this point it would be good familiar
44:42 the environment. And we suggest fight . There's others that if you're comfortable
44:47 something else, that's fine, So and in future, you will
44:53 have access to the book that you . Nobody would do serious. They're
44:57 in the book. The Fight John something that professional program has also used
45:02 their reports. Okay, so way really like you to get comfortable with
45:09 jam and on Bond, be able write programs and by charm and so
45:18 . It's a much nicer environment than book provides. Nothing against the
45:23 I think it's wonderful off its but, um, so what?
45:29 decided since normally we insist that this is done on by John because for
45:38 these reasons, whether because off along sort of dislocation this year we're going
45:47 cover by Chang, you really should by John, However, for the
45:53 will develop A If you somehow have with my charm, you can still
45:59 in the book, but we will more fun doing it invites him that
46:06 um if you need the final submission be done on the on the
46:12 So I'm going to actually get back other mud and stop sharing.
46:26 Yes. All right. So, so So that's that's the thing.
46:35 we really like you, Thio go pie champ. It'll be really
46:40 But just to get your points for assignment, you don't absolutely have
46:46 And the way we manage that is , like, a few fires in
46:50 book, and we'll just develop, , developed a fine man so that
46:58 can do the basic staying and things those files, so you don't need
47:01 absolutely have thio have to do So the assignment has three questions.
47:08 third question does require my chum, the third question is the practice
47:14 So there is No, it's not essential. Any questions so far?
47:38 . All right, So why don't what we're gonna do the rest of
47:43 way is that the jury is gonna give a short on how to install
47:50 charm, and he's also going to you a little bit more on how
47:55 look for files And how you are of work with the world environment.
48:02 world in this case being your If you had the input files on
48:06 laptop, the laptop, how would do it? Um, so that
48:11 you can get started. Then? the meantime, if somebody thinks off
48:14 questions, then go ahead and like and let's pause for a minute,
48:20 then radio will get started. You can start screen sharing whatever you
48:40 to set up. Okay, So I I don't see that getting
48:48 right now because I'm sharing the my . Stop right now. Okay,
48:53 hang on. Uh, yeah. just give it just falls for one
48:59 , we can see it, and keep I am the check window.
49:03 . Yes. Yes. Right. I guess there's no more questions so
50:46 can start with starting 500 by It eso Can you hear me?
51:03 . Okay, so I guess everyone downloaded the fightem Futural. Pdf we
51:10 uploaded in the schedule section on basically . Least every step you need to
51:15 , but I'm going toe, show a demonstration off the thing. So
51:20 , first we need to download the on. This is the link we
51:25 shared on the period on if you there, you'll see that download fight
51:29 . But in here, if you here if you do a lot of
51:32 , select your operating system and But if you're not sure, you
51:36 stick click on the, um, and then see, for example,
51:41 22 bit versus 64 bit as we in the pdf different kind of architect
51:48 are protections so you can choose depending your system. Then once you click
51:53 this thing, it will start And I have already that thing
51:57 Onda, let's start from there. example, this McDonald for where my
52:02 pie fight on is downloaded. So is the 64 billion. This started
52:07 bit. I download a vote, my system is 60 48 So I'm
52:10 to click on this thing. It'll here now. The thing is,
52:16 very important thing is like you have . You have to click on this
52:20 like Air Titan, two part disability find your fight on program once you
52:27 it from Pai Chang. This stuff very important on demand. You can
52:34 . Install out that directly install your item to that folder specified. But
52:40 have to do about the entire So right now I'm going to use
52:44 on. Then I slept next because want to set the fighters part toe
52:49 location, not the default one. I'm going to choose a different location
52:53 my folder. I have a nice thio Four or five done.
53:03 Uh, so I have to remember place, like e applications by
53:08 38. So I have to remember place because in from pica, mind
53:12 the system doesn't automatically finds my vital , I have to mention it.
53:16 if you use custom menstruation or the one year to remember the path where
53:21 by item was installed, this is location off your vital installations. So
53:28 , you wanna be pause? A is there s Oh, there's,
53:33 is there anybody who you can try download now? Anybody who is not
53:40 to download what is the site to Pleasure. It's so isn't in,
53:51 , Yeah. So why don't we pause for a second? Somebody said
53:56 had trouble downloading. Uh, let try. He's talking about Python,
54:02 I'm not working on by John right , so let's download python first.
54:06 we can go. We can see e I just wanna make sure
54:11 uh, so I just browse the minutes back. This is a pie
54:15 website, and it's working. Everyone see. Okay, uh, this
54:27 . Yeah. So, just one time. What was the fight on
54:31 again? I just wanna, um , so we can't cut and
54:37 So we have toe, uh s , this is a fight,
54:47 Okay, so there's a question. the bajan No, the question website
54:52 , uh, fine. So there's question. Is the anaconda package
54:58 Yes, it is. Okay, we're going to follow simpler ways.
55:02 , if someone, if somebody has conduct, do we care?
55:09 Everything is fine. Yeah. in the context, you know,
55:13 various ways of doing it, and of you already may have anaconda
55:18 And if you have high jump up running, that's all. It doesn't
55:23 . how you got it. So there's an alternate way, that's
55:26 If you don't have any other way by the way, the slides that
55:34 send that also send on on backwards you can see from there. So
55:41 answer is yes. And a condom find. Basically, if you're starting
55:46 scratch, this is one set of . Okay. Okay. So now
55:54 hitting the install on. He's going install my library, the python libraries
55:59 my system. This was for a . It's hard to read, but
56:11 have this recorded and kiss. Somebody to go back to it.
56:39 The city was successful, and we're it installing, uh, fightin on
56:45 next step would be will be going install the fight jump and of I
56:53 downloaded the pageant from this jet printer download. And I have chosen that
56:59 version because it is free, and sufficient for us or dust on.
57:05 , the download location is here, I'm going to start by German
57:13 Yeah, studies step forward in this on next. So whatever the decision
57:29 a way to give us fine then I'm going toe select these
57:40 This is optional Like you can do or not. That's fine. The
58:55 opinion searching is done. I'm going flip around Pigeon community Edition, This
58:59 box And then I clicked. Finished by John will start and the last
59:08 to import something. I don't have going for on. And so there
59:14 be some other two steps interview because had five families told before in much
59:18 same thing. So I didn't ask this time, but I have shared
59:22 in the pdf. It will show something like some data sharing and privacy
59:31 . Something like this you can select you going to these options that you
59:37 it. You want to share data something like that? They need to
59:40 to this fine where I am right . So I'm going thio, use
59:44 light more so you I color things you can dependent indicator also So
59:50 keep remaining and set defaults and I'm to start fighting now. So then
60:01 click on create new project. So basically sucks me Thio the location for
60:09 new project and everything so you can change from here. Whatever you
60:15 Location, for example, we can like farmers that they should go to
60:18 old issue. There's a file Let's see, Dr. Then you
60:22 see my user name and everything. maybe I'm going to choose a different
60:27 believed And my workspace, then by Fuller. And then I'm going to
60:31 it for the program. For this , uh, hello, wild
60:36 I don't think this is a very problem. I'm going to show you
60:39 now. Anything like the virtual New virtual. Remember using this
60:43 You're you can do this thing, I'm real subject to use extreme interpreters
60:50 def. You have probably not see here, or you could see you
60:55 heightened by the court here. If don't see anything here, you can
60:58 on this three dogs button here on feel you can select on system interpreter
61:03 it will automatically select the python evolved the stars if you don't see it
61:08 by default. If you miss any this case before, you can definitely
61:12 here and go toe the place where basically installed. You're fighting. So
61:17 started here. So if I select thing, you did not really come
61:19 and fighting that they exist selected. take a look. Okay. Can
61:23 be automatically change to this? This my interpreter now, and then I
61:31 create. So these steps are describing period. Also, if you don't
61:36 you, you can click there. this is where your left that You
61:45 see your family structure for your project here. Once this Hello.
61:52 Selected in photo file. Selecting you will ask you, like what kind
61:57 file you need to select. Fight five on. Then we made
62:02 for example. Follow that five And there then this is created.
62:14 there any question like that? Anyone ? Is there any difficulty to
62:17 What lately are you trying to Whatever were credited. So,
62:24 if you go toe view, there , uh, trying to see,
62:33 , e I can see their Yeah. Now I'm just saying,
62:40 , if you go to view, a presentation mode view. Ah.
62:54 . I don't know why it's must heading for me, actually. Um
63:00 can You can get into presentation mode your python window would be more.
63:07 so both Yeah, in view. the second header is appearances. And
63:16 that, you'll have Oh, presentation more than everything will get
63:31 So we can't really read. you're right. That little program.
63:36 this is very simple program I'm going write. Okay. Basically what?
63:54 trying to show them the interview. why I'm not Okay. Sorry.
63:59 whatever. Yeah, So I don't how to get good from this,
64:03 ? Yeah, that's true. You see the interest. You can only
64:07 the program whichever way you're comfortable. do I exit from this singer?
64:29 , okay. So from here way to pick the run on this around
64:36 here in the green arrow click here likes toe celebration for the person.
64:46 then it wouldn't be a hello world as an artist. If I go
64:50 here, I don't need toe run click run again. I can click
64:55 here So you think hello or So let's create another program.
65:03 And we can particularly work with Mhm. If you go toe.
65:13 that board you can see, like have the assignment files here, a
65:17 95 If you click here, it'll exit folder like this one. If
65:26 double click here, it will And you see a list of files
65:32 we need for that. But you still in the deep, uh,
65:36 folder. So what way need to is that we have to be
65:41 click and then experience? Yeah, fine. So while you're starting,
65:47 for one of the questions with a of files for you, toe,
65:53 , it's the third question in the . So did you site expected them
66:06 ? So now my files are located this place. If I click on
66:11 one of the files that doctor should , I said like a constitution.
66:15 if I click the property, I see the file's location move.
66:24 just in the general itself. You hear something? Uh,
66:33 yeah. You don't hear the location . So, you know, my
66:38 , uh, one way off handling prices that I copied them to my
66:44 folder. Like, if I goto , uh, this was my basically
67:02 my by jumps or sports were But my downward file is here,
67:08 I can accept them directly from Or I can pop it in that
67:11 show them the board. So, , actually, Roger, can you
67:20 ? Is it easy for you to the size of your phone's just on
67:27 screen, like just screen. If either that or for you either were
67:35 for your whole computer. Yeah. , it might have. He's big
68:00 . That's slightly better. Yes. , so I'm going to use the
68:07 . There's ah, from when this line out, we're going to read
68:10 of the fights have downloaded. for example, uh, that Find
68:18 TV doctor dark TFC. I'm going open this five. Yeah, First
68:25 like we have to create a five and list typing the name. I'm
68:38 this taken personally. Okay, So I want toe for he shows me
69:09 the file not found error. So I'm tryingto such for this file in
69:15 source for their here here. But no violent TV that advocates the
69:22 But as I have already shown you the location off my file is the
69:27 G downloads. If I add this my source book here, right,
69:39 works. You don't show any Let me try to clean whatever the
69:44 line off the families. Okay, is the first line off my
69:54 The few million adult faces. We go to the file, open the
70:00 and see this is my first But is it the area? So
70:13 you cannot find your file from the or something, you feel anything matter
70:19 your country what you can do evil like a copy of all of whiles
70:25 your source folder where your source like hell of fire or homework that fire
70:31 fight fight. Um, source file located. So if I do these
70:34 so I don't need to add this here, I can just write TV
70:38 a dot PHP and I can run sound off folder where my suicide in
70:45 . But I don't need to get full facts if the source and the
70:49 bytes are in the same for So it's also thinking maybe one more
71:00 . Movinto, You're just regular dust and then see what file it is
71:06 try that way. Okay, so now I'm going to believe this thing
71:12 to be clear so that we're not from, like when I'm in the
71:17 on then, uh, be a here, like beautiful files.
71:24 Mm hmm. So let's let's see path off one of these. Just
71:32 like the properties. So you just slow down because it's not so easy
71:36 read. So, user, my name that selfies. Okay, so
71:42 you can just eso just just to sure you're right, Click and
71:47 uh, you get that. just cut that. Copy that and
71:52 put it in your python. So it as this. So this could
72:07 and probably Yeah, trying. Yeah. So what's the reason?
72:20 slash happy the special character, So, yes. So the slash
72:26 to make everybody's life just to make more confusing for you, The slash
72:32 you get when you look for the is the opposite of the flash.
72:37 see this back slash in the but you put the fun slash in
72:40 path so just change those You? . Now for a flash.
72:49 So you just change. The backslash the front slashes, and hopefully it
72:53 work. Yes, it looks Yeah, because the backslash is using
73:10 for many of the special characters. New Line. So back this after
73:14 special character, Yes. You have area? Yeah. So if if
73:20 doesn't have backslash and are therefore, a special character than it was for
73:25 other taken around there, that's Um, so yeah, OK.
73:44 questions? Anybody on Anything we've done far? If you had a chance
73:53 look at the homework, if there's you don't understand, you can bring
73:58 up now. Otherwise, we will ah follow session about the homework on
74:05 . Hopefully, you're all done by . It's not a hard homework.
74:11 , but we will. We will a session anywhere for anybody interested?
74:19 I have something bad. Okay, if you were trying to solve,
74:25 , there's a mention person number one from the book itself. You don't
74:29 this part thing because from book, it is used that that you have
74:34 to keep the debt about taste in same folder? Yeah. Yeah.
74:41 when you access the file them in book, think off it that you
74:45 running from the same folder as the . So you don't have. Of
74:50 , you don't have the back name the book. But that should
74:55 And really, if you have even little bit of time, I would
75:00 what you're there. Download, by charm and do it will be
75:05 more pleasant to do those and bites . But in the end, you
75:10 submit in the book, which you cut, Invest of working program,
75:17 , so on. And it really , even if you're it's not that
75:23 . So download and install pipes on and get it running. Many of
75:27 have already done it. Um, it's it's a good skill to have
75:33 . So two important things that you to remember one is like where you
75:38 in this entire process, where your start the system is supposed to pick
75:43 up. If you have click the box at Bath toe. The administration
75:48 the next important thing is here. like the your project location where yourself
75:55 so many of the students who had using, uh, they're like finding
76:01 source file on a Mac book. a common mistake. Many off the
76:07 programmers do it like the copy. have their file on the desktop.
76:10 have their source filing somewhere in the . And then then try toe.
76:15 don't find the source file or the files. So easy way to find
76:21 source file is looking to this You can use your file explorer if
76:25 using other than Windows, you can your file ex wherever you can look
76:29 your fight. That that part and will find the society. Wow.
76:45 , you're done. Picture? Okay. All right. So will
76:52 here for the next several minutes. anybody is anybody has questions.
76:58 then we have the first recession. then there's lots of office hours on
77:04 . Try to get this done We're going to release the next assignment
77:09 . Also, the only the final assignment is already out. Eso that
77:17 week you can focus more on preparing your your final and be done with
77:26 ? Um, yeah. Okay. , if there's any questions off any
77:36 , bring them up now. Otherwise going. Thio officially closed the
77:44 Thanks for sticking around. And if often office hours type questions, just
77:52 around and we can talk to you
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