尝试在 PyQT5 中打开文件时出现无效文件错误

Question

我正在尝试制作一个基本的文本编辑器，并且我正在使用 PYQT5 来执行此操作，但是当我尝试打开或保存文件时出现错误，打开时我得到：

File "D:\NicKLz\Documents\GitHub\MiscProjects\TextEditor\txtEditor.py", line 81, in open
    with open(self.filename, "r") as file:
TypeError: invalid file: ('D:/NicKLz/Documents/GitHub/MiscProjects/TextEditor/Hello.writer', 'Files (*.*)')

通过保存我得到：

File "D:\NicKLz\Documents\GitHub\MiscProjects\TextEditor\txtEditor.py", line 89, in save
    if not self.filename.endswith(".writer"):
AttributeError: 'tuple' object has no attribute 'endswith'

这是我为这些功能所拥有的：

def open(self):
    #Get filename and show only .txt files
    self.filename = QtWidgets.QFileDialog.getOpenFileName(self, 'Open File', ".", "Files (*.*)")

    if self.filename:
        with open(self.filename, "r") as file:
            self.text.setText(file.read())

def save(self):
    #Only Open this dialog if there is no filename yet
    if not self.filename:
        self.filename = QtWidgets.QFileDialog.getSaveFileName(self, "Save File")
    #Add the appropriate extension if not currently in place
    if not self.filename.endswith(".writer"):
        self.filename += ".writer"

    #Store Contents and format in html format which QT does a nice job of implementing for us already
    with open(self.filename,"w") as file:
        file.write(self.text.toHtml())

任何帮助将不胜感激。

Answer 1

self.filename 是一个元组，所以显然你不能把它当作一个字符串，有两个从方法返回的元素，你想要第一个这样解包：

self.filename, _ = QtWidgets.QFileDialog.getOpenFileName(self, 'Open File', ".", "Files (*.*)")

或索引：

self.filename = QtWidgets.QFileDialog.getOpenFileName(self, 'Open File', ".", "Files (*.*)")[0]