我有一個名為PDFviewer的python類，在運行該程序時，系統將顯示一個窗口，該窗口處理button(打開文件夾)，它將打開一個文件對話框，允許用戶選擇一個目錄并顯示其中的文件。在

問題是，當我嘗試單擊按鈕時，系統崩潰并顯示以下錯誤：File

"C:\Users\test\Documents\Python_Projects\final_project\myPDFviewer.py",

line 36, in sys.exit(app.exec_()) File

"C:\Users\test\Documents\Python_Projects\final_project\myPDFviewer.py",

line 24, in setExistingDirectory options=options)

builtins.TypeError: getExistingDirectory(parent: QWidget = None,

caption: str = '', directory: str = '', options:

Union[QFileDialog.Options, QFileDialog.Option] =

QFileDialog.ShowDirsOnly): argument 1 has unexpected type 'bool'

代碼：from PyQt5 import QtCore, QtGui, QtWidgets

from PyQt5.QtWidgets import (QApplication, QCheckBox, QColorDialog, QDialog,

QErrorMessage, QFileDialog, QFontDialog, QFrame, QGridLayout,

QInputDialog, QLabel, QLineEdit, QMessageBox, QPushButton)

from PyQt5.QtCore import QDir, Qt

import pdfviewer

class pdfViewer(pdfviewer.Ui_PdfPreviewWindow):

def __init__(self,PdfPreviewObj ):

self.PdfPreviewObj =PdfPreviewObj

self.setupUi(PdfPreviewObj)

self.PdfPreviewObj.show()

self.pushButtonOpenFolder.clicked.connect(self.setExistingDirectory)

def setExistingDirectory(self,qf):

options = QFileDialog.DontResolveSymlinks | QFileDialog.ShowDirsOnly

directory = QFileDialog.getExistingDirectory(self,

"Open Folder",

options=options)

if __name__ == "__main__":

import sys

app = QtWidgets.QApplication(sys.argv)

PdfPreviewWindow = QtWidgets.QMainWindow()

pdfViewerUi = pdfViewer(PdfPreviewWindow)

sys.exit(app.exec_())

總結

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