Почему моя кнопка удаляет все книги с одинаковыми атрибутами? ⇐ Python

[Anonymous]

Я использую PyQT5 и Python для создания этой виртуальной библиотеки, но у меня проблема с функцией кнопки on_click_remove. Он удаляет все, что имеет один и тот же атрибут; если у меня есть две книги под названием «one_piece», и я попытаюсь удалить только одну, другая тоже будет удалена. Я попробовал несколько подходов, но ни один из них не сработал. Это мой код:
import sys
from PyQt5.QtWidgets import QApplication,QLineEdit,QVBoxLayout,QWidget,QPushButton,QListWidget,QMessageBox
from PyQt5.QtGui import QIcon
import books
import pandas as pd

class MainWindow(QWidget):

def __init__(self):
super().__init__()
self.setGeometry(100,100,800,800)
self.setWindowTitle("Virtual Library")
self.setWindowIcon(QIcon("bookshelf.png"))
self.vbox=QVBoxLayout()

try:
self.df = pd.read_csv("thelibraryy.csv")
except FileNotFoundError:
self.df = pd.DataFrame(columns=["Title", "Author", "Year", "Genre","Content"])

i=0
listo=[]
while self.df.shape[0]>i:
listo.append(f'the book {{{self.df["Title"]}}} by {{{self.df["Author"]}}} written in {{{self.df["Year"]}}} and its {{{self.df["Genre"]}}}')
i+=1

self.book_list = QListWidget()
self.vbox.addWidget(self.book_list)
self.book_list.setStyleSheet("font-size:20px ;")
self.book_list.addItems(listo)

self.data_info={}
self.Labels()

self.title=self.data_info['Title'].text()
self.author=self.data_info['Author'].text()
self.year=self.data_info['Year'].text()
self.genre=self.data_info['Genre'].text()

self.Buttons()

def Labels(self):

self.names=['Title','Author','Year','Genre']
for name in self.names:
self.field=QLineEdit(self)
self.field.setPlaceholderText(f"Enter the {name} ...")
self.field.setStyleSheet("font-size:20px; ")
self.vbox.addWidget(self.field)
self.data_info[name]=self.field
self.setLayout(self.vbox)

return self.data_info

def Buttons(self):

self.add=QPushButton("Add")
self.vbox.addWidget(self.add)
self.add.clicked.connect(self.on_click_add)

self.remove=QPushButton("Remove")
self.vbox.addWidget(self.remove)
self.remove.clicked.connect(self.on_click_remove)

self.edit=QPushButton("Edit")
self.vbox.addWidget(self.edit)
self.edit.clicked.connect(self.on_click_edit)

buttons=[self.add,self.remove,self.edit]
for i in buttons:
i.setStyleSheet("""
QPushButton {
background-color:rgba(255, 255, 255, 0.5);
color: black;
font-size: 25px;
border: 2px solid #0078D7;
border-radius: 20px;
padding: 10px;
}
QPushButton:hover {
background-color:rgb(0, 170, 255);
color: white;}""")

def on_click_add(self):
self.title = self.data_info['Title'].text()
self.author = self.data_info['Author'].text()
self.year = self.data_info['Year'].text()
self.genre = self.data_info['Genre'].text()

if not self.year.isdigit():
QMessageBox.warning(self,"Input Error",f"Year Must Be A number not {self.year}")
return

if (self.title and self.author and self.year and self.genre):

if not self.df[(self.df["Title"]==self.title) & (self.df["Author"]==self.author) &(self.df["Year"]==self.year) &(self.df["Genre"]==self.genre)].empty:

QMessageBox.warning(self,"Input Error",f"this book {self.author} already Exist in the library ")

else:

book = books.Books(title=self.title, author=self.author, year=self.year, genre=self.genre,content=self.title.replace(" ","_")+".txt")

frame = pd.DataFrame([{"Title": book.title, "Author": book.author, "Year": book.year, "Genre": book.genre,"Content":book.content}])

self.df=pd.concat([self.df,frame],axis=0,ignore_index=True)
self.df.to_csv("thelibraryy.csv", index=False)

self.book_list.addItem(f'the book {{{self.title}}} by {{{self.author}}} written in {{{self.year}}} and its {{{self.genre}}}')

print("book is added to the library")

for names,labels in self.data_info.items():
labels.setText("")
else:
QMessageBox.warning(self,"Input Error","You Forgot to Fill a Label")

def on_click_remove(self):

self.selected_item=self.book_list.currentItem()

if self.selected_item:

self.item_text = self.selected_item.text()
self.start_of_title = self.item_text.find("{") + 1
self.end_of_title = self.item_text.find("}")
self.text_title = self.item_text[self.start_of_title:self.end_of_title]

self.start_of_author = self.item_text.find("by") + 5
self.end_of_author = self.item_text.find("written")-3
self.text_author = self.item_text[self.start_of_author:self.end_of_author]

self.start_of_year = self.item_text.find("written in") + 13
self.end_of_year = self.item_text.find("and its")-3
self.text_year = self.item_text[self.start_of_year:self.end_of_year]

self.start_of_genre = self.item_text.find("its") + 6
self.text_genre = self.item_text[self.start_of_genre:-1]

self.df = self.df[((self.df['Title'] != self.text_title) &
(self.df['Author'] != self.text_author) &
(self.df['Year'] != self.text_year) &
(self.df['Genre'] != self.text_genre))]

self.df.to_csv("thelibraryy.csv", index=False)
self.book_list.takeItem(self.book_list.row(self.selected_item))

else:
QMessageBox.warning(self,"Selection Error","You Didn't Select Any Row")

def on_click_edit(self):

self.selected_item=self.book_list.currentItem()
if self.selected_item:
self.book_list.takeItem(self.book_list.row(self.selected_item))

self.item_text = self.selected_item.text()
self.start_of_title = self.item_text.find("{") + 1
self.end_of_title = self.item_text.find("}")
self.text_title = self.item_text[self.start_of_title:self.end_of_title]

self.start_of_author = self.item_text.find("by") + 5
self.end_of_author = self.item_text.find("written")-3
self.text_author = self.item_text[self.start_of_author:self.end_of_author]

self.start_of_year = self.item_text.find("written in") + 13
self.end_of_year = self.item_text.find("and its")-3
self.text_year = self.item_text[self.start_of_year:self.end_of_year]

self.start_of_genre = self.item_text.find("its") + 6
self.text_genre = self.item_text[self.start_of_genre:-1]

self.df=self.df[~(self.df['Title']==self.text_title)]
self.df.to_csv("thelibraryy.csv", index=False)

items={'Title':self.text_title,"Author":self.text_author,"Year":self.text_year,"Genre":self.text_genre}
for names,labels in self.data_info.items():
labels.setText(items[names])
else:
QMessageBox.warning(self,"Selection Error","You Didn't Select Any Row")

def main():
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())

if __name__ == "__main__":
main()


Подробнее здесь: https://stackoverflow.com/questions/793 ... attributes