🔒 can somebody help me with this object creator function. im getting errors and idk hwo to use it

[placid idol]

def bookinfotxtread(book):
        # This method will read the file and create Book objects
            bookslist = []
            filename = book.name + ".txt"
            with open(filename) as bi:
                line_list = bi.readlines()
                
                for line in line_list:
                     book_data = line.strip().split(",")

                     if len(book_data) == 2:  # If there are only 2 values in the file
                        book_data_inside = Book(book_data[0], None, None, None, book_data[1])
                        print(book_data_inside)

                     elif len(book_data) ==5:
                        book_data_inside = Book(*book_data)

Traceback (most recent call last):
  File "c:\Users\anuro\OneDrive - Edgewater College\3TDIG\python stuff\2.3_borrowfinal.py", line 64, in <module>
    hi.bookinfotxtread()
  File "c:\Users\anuro\OneDrive - Edgewater College\3TDIG\python stuff\2.3_borrowfinal.py", line 43, in bookinfotxtread
    with open(filename) as bi:
         ^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '.txt'
PS C:\Users\anuro\OneDrive - Edgewater College\3TDIG\python stuff> 
``` i dont know what is happenig here

[barren pecan]

@placid idol

Python help channel opened

Remember to:

• Ask your Python question, not if you can ask or if there's an expert who can help.
• Show a code sample as text (rather than a screenshot) and the error message, if you've got one.
• Explain what you expect to happen and what actually happens.

:warning: Do not pip install anything that isn't related to your question, especially if asked to over DMs.

Closes after a period of inactivity, or when you send !close.

[placid idol]

please dont close channel for now i am in school so i might not be able to respond

[zinc scarab]

Well it's just as the error says there's no file named .txt in your directory

Looks like when you called the Book class you start spamming none to all params, so now you have no book name, so basically this line filename = book.name + ".txt" is not doing a thing it just names the book instance to ".txt"

[placid idol]

i do have a file called book.txt so does filename have to be book.txt = book.name = ."txt"

[zinc scarab]

The prob in your instance

[zinc scarab]

Where do u have

[placid idol]

oh ok

[zinc scarab]

In the same dirzctory

?

[zinc scarab]

Yeah

[placid idol]

all they way at the bottom

bookinfo.tzt

txt

[zinc scarab]

How about you print out filename right after this line filename =

And see what is the value that is passed

[placid idol]

btw why is it open(filename) instead of open(bookinfo.txt, "r")

[zinc scarab]

Huh?

Go print out filename

print(filename)

[placid idol]

i did

came up with .txt

so there is no filename

[zinc scarab]

Yeah

[placid idol]

like you know how when you are regulary opening files, you do open("filename.txt", "mode") as something:

[zinc scarab]

Yeah

[placid idol]

can i not do that?

[zinc scarab]

Yeah sure

Does the program always open the same file?

[placid idol]

yes

only file i have

[zinc scarab]

Yeah just pass the file name

Like a string

[placid idol]

because i did this in codeavengers and it seemed to work so i copypasted the code and changed it to my own stuff

but it didnt work here

[zinc scarab]

No

The prob is when you created the instance of your book you didn't specify a name

[placid idol]

yes

because my teacher said

it cannot be

hardcoded

[zinc scarab]

He said to pass all the params must be none?

[placid idol]

wait

can i paste my assesment code

[zinc scarab]

Go ahead

[placid idol]

class Book:

    def __init__(book, name, initavailbility = None ):
        book.name = name
        book.initialavailable = initavailbility
        book.borrowed_by = None
        book.borrow_date = None
        book.due_date = None
        book.isavailable = None  # Initialize as available when the book is created
    
    def __repr__(book):
       return f"book {book.name}"
    def __str__(book):
        return book.name
         
    def borrow_book_info(book, borrower, borrow_date, due_date):
        book.borrowed_by = borrower
        book.borrow_date = borrow_date
        book.due_date = due_date
        book.isavailable = False  
    def return_book_info(book):
        book.borrowed_by = None
        book.borrow_date = None
        book.due_date = None
        book.isavailable = True

    def bookinfotxtwrite(book,entryvargetter):

        with open("bookinfo.txt","a") as writebookfile:
           
           writebookfile.write(entryvargetter)
           

    def bookinfotxtread(book):
        # This method will read the file and create Book objects
            bookslist = []
            filename = book.name + ".txt"
            print(filename)
            with open(filename) as bi:
                line_list = bi.readlines()
                
                for line in line_list:
                     book_data = line.strip().split(",")

                     if len(book_data) == 2:  # If there are only 2 values in the file
                        book_data_inside = Book(book_data[0], None, None, None, book_data[1])
                        print(book_data_inside)

                     elif len(book_data) ==5:
                        book_data_inside = Book(*book_data)
                    

                

                    

#--------------------------------------------------------------------------------------------------------------------------------------------------


``` here

and

## bookstuff is the abbrivation for to kill a mocking bird
hi = Book("")
hi.bookinfotxtread()


bookslist = []

bookslist2 = []
booksavaliable  = [book for book in bookslist2 if book.isavailable]
booksnotavaliable = [book for book in bookslist2 if not book.isavailable]

so this is the code

i pasted it in parts becuse

tbh this is a short part

i just pasted the relavant bits

i have bad coding logic sorry

so do you know what i didnt add?

or what is wrong

i cant seem to figure it out

[zinc scarab]

what caused your programm to fail is this, take a look at thoss details,
first of all the init function py def __init__(book, name, initavailbility = None ): book.name = name here you initialized your variable and set self.name = name, BUT when you created the instance py book_data_inside = Book(book_data[0], None, None, None, book_data[1]) you passed none to name so now self.name = None

[placid idol]

oh

but book_data[1] is supposed be the name from file

i think

[zinc scarab]

is book_data a list?

[placid idol]

no the data from the bookinfo.txt

name and avalibility

[zinc scarab]

wait

why you don't pass self

did you wrote this code ?

[placid idol]

yes

i changed self to book because i realized self can be whatbver i want

[placid idol]

what do you mean?

[static gale]

Well, this is true We conventionally call it self so that we're reminded that we're talking about some class instance.

[zinc scarab]

when creating a function inside a class we pass self as the first param

[placid idol]

yes

yeah bookinfoxtxtead(book) so it has the self as first param, just renamed book

[zinc scarab]

renamed

what

[placid idol]

like

self was just renamed into book

think of self but it is book

[zinc scarab]

i haven't write python code since a while but i can tell that what your saying make no sense

[placid idol]

oh

[zinc scarab]

you can't just rename self on your own

[placid idol]

oh

so i just change back book to self?

[zinc scarab]

ofc

you don't rename language statments and expression and syntax

[placid idol]

oh

i changed it back

what do i do now

do i remove bookdatainside?

[zinc scarab]

did you wrote the code yourself?

[placid idol]

yes

mostly

some were referenced from chatgpt

the reading part atleast

[fossil badger]

Could you use the paste service and share your current code, please?

!paste

[barren pecan]

Pasting large amounts of code

If your code is too long to fit in a codeblock in Discord, you can paste your code here:
https://paste.pythondiscord.com/

After pasting your code, save it by clicking the Paste! button in the bottom left, or by pressing CTRL + S. After doing that, you will be navigated to the new paste's page. Copy the URL and post it here so others can see it.

[placid idol]

i just pasted

[fossil badger]

And yes, self is a common convention. You'll be quite confused (or confuse someone else) if you change that convention.

[placid idol]

oh ok

[fossil badger]

And share the link, please?

[placid idol]

https://paste.pythondiscord.com/KJSQ
this?

no problem

only the part above

hi = Book("")
hi.bookinfotxtread()


bookslist = []

bookslist2 = []
booksavaliable  = [book for book in bookslist2 if book.isavailable]
booksnotavaliable = [book for book in bookslist2 if not book.isavailable]
 
``` is relavant right now though

[static gale]

Sure you can. It's unconventional, but works just fine.

[zinc scarab]

i'm not sure about this hi = Book("") hi.bookinfotxtread()

[placid idol]

i used that to see if code worked

[zinc scarab]

i havn't seen anyone renaming self tbh

[placid idol]

since i dont know any valid ways of testing whether the code actually made the class or not

[fossil badger]

It's a fairly strong convention, but the point is moot

[static gale]

Well, you could print(type(hi))

[placid idol]

oh

[fossil badger]

Well, if the Book("") line throws no error, the class instance* is created. That's not really in question.

[placid idol]

so it creates the class objects?

let me try rq

[static gale]

It creates an instance of the class.

(We make this distinction because the Book class itself is an object. Everything's an object.)

[placid idol]

oh

[fossil badger]

It seems you might be more familiar with Java, maybe?

[placid idol]

no

i have done some minor c++

but

that is all i know

[fossil badger]

I see. Some of the code style looked like it, why I asked.

[placid idol]

i just messed around with

i did the thing but hi is not defined

what do i put inside the bracket for

type

im sorry for asking all this lol i just dont get stuff sometimes

[fossil badger]

hi would not be defined if there's no hi = statement somewhere.
Where are you running the line for type()?

[placid idol]

outside function

[fossil badger]

And code runs in sequence, so this:

print(hi)
hi = Book()
``` is an error.

[placid idol]

oh

oh

['To Kill a Mockingbird', 'True']
['The Great Gatsby', 'True']
<class '__main__.Book'>
``` this s result

i know the file is being read but dont know if class is created with the name of the book or not

[static gale]

Well, the last line is from your print(type(hi))

You can print things from the instance. print(hi.name)

[fossil badger]

Just the fact that the list is printed indicates the class instance exists and the method on that class instance was called.

[placid idol]

oh

[placid idol]

i just did nothing came up

[fossil badger]

Perhaps this will illuminate things:

one = Book("To Kill A Mockingbird")
two = Book("The Great Gatsby")

Play with these a bit. These are two instances of the same Book class.

[placid idol]

\anuro\OneDrive - Edgewater College\3TDIG\python stuff>                                                                                                             > & C:/Users/anuro/AppData/Local/Programs/Python/Python312/python.exe "c:/Users/anuro/OneDrive - Edgewater College/3TDIG/python stuff/2.5 borrow.py"

PS C:\Users\anuro\OneDrive - Edgewater College\3TDIG\python stuff> 

i just realized im doxxing my schools name lol

[static gale]

... andprobably your login name.

[placid idol]

oh

[static gale]

Anyway, you'd have to show us the contents of the 2.5 borrow.py file. ... and you did save it before running?

[placid idol]

yes it is saved

wait i ran the wrong file

[static gale]

Won't help 🙂

[placid idol]

sorry

i changed some stuff

can i add them?

[static gale]

Don't understand what you mean here.

[placid idol]

show the new code

[static gale]

Show away.

[placid idol]

class Book:

    def __init__(self, name, initavailbility = None ):
        self.name = name
        self.initialavailable = initavailbility
        self.borrowed_by = None
        self.borrow_date = None
        self.due_date = None
        self.isavailable = None  # Initialize as available when the self is created
    
    def __repr__(self):
       return f"self {self.name}"
    def __str__(self):
        return self.name
         
    def borrow_book_info(self, borrower, borrow_date, due_date):
        self.borrowed_by = borrower
        self.borrow_date = borrow_date
        self.due_date = due_date
        self.isavailable = False  
    def return_book_info(self):
        self.borrowed_by = None
        self.borrow_date = None
        self.due_date = None
        self.isavailable = True

    def bookinfotxtwrite(self,entryvargetter):

        with open("bookinfo.txt","a") as writebookfile:
           
           writebookfile.write(entryvargetter)
           

    def bookinfotxtread(self):
        # This method will read the file and create Book objects
            bookslist = []
        
            with open("bookinfo.txt", "r") as bi:
                line_list = bi.readlines()

                for line in line_list:
                    book_data = line.strip().split(",")
                    Book(*book_data)
          
#--------------------------------------------------------------------------------------------------------------------------------------------------
## bookstuff is the abbrivation for to kill a mocking bird
hi = Book("")
hi.bookinfotxtread()
print(type(hi))

bookslist = []

bookslist2 = []
booksavaliable  = [book for book in bookslist2 if book.isavailable]
booksnotavaliable = [book for book in bookslist2 if not book.isavailable]

i just backtracked

wait can you close this channel? ill probably come back later

asking for help

once i figured out some more stuff

[static gale]

You close it yourself by typing !close

[placid idol]

atp im hopeless on what to do and dont know what to do lol

oh ok

!close

[barren pecan]

Python help channel closed

This help channel has been closed and it's no longer possible to send messages here. If your question wasn't answered, feel free to create a new post in #1035199133436354600. To maximize your chances of getting a response, check out this guide on asking good questions.