python 3 (Qt) [Errno 13] В доступе отказано.Как получить путь к папкам?

Question

Я создаю небольшое настольное приложение.Все, что мне нужно, это получить путь к папкам и поместить его в виджет textEdit.Оттуда мне нужно запустить некоторую функцию «сканирования» через все файлы, которые находятся в этом пути к папкам.Но все, что я получаю, это ошибка:

PermissionError: [Errno 13] Permission denied: 'C:/Users/dava8001/AppData/Local/Programs/Python/Python36-32/test-scan1/images'.

Любой совет?

Вот мой код:

from PyQt5 import QtGui
from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QPushButton, QTextEdit, QLineEdit, QToolTip, QMessageBox, QProgressBar, QWidget
from PyQt5.QtCore import QCoreApplication, QBasicTimer
import sys
import os

class Window(QMainWindow):
def __init__(self):
    super().__init__()

    self.title = "Barcode Scanner"
    self.top = 100
    self.left = 100
    self.width = 680
    self.height = 500

    self.InitWindow()

def InitWindow(self):
    self.button = QPushButton("Choose Folder Path", self)
    self.button.move(100, 150)
    self.button.resize(150, 50)
    self.button.clicked.connect(self.getFolder)

    self.btnScan = QPushButton("Scan", self)
    self.btnScan.move(450, 150)
    self.btnScan.resize(150, 50)
    self.btnScan.clicked.connect(self.scan)

    self.btnClose = QPushButton("Close", self)
    self.btnClose.move(450, 400)
    self.btnClose.resize(150, 50)
    self.btnClose.clicked.connect(self.CloseApp)

    self.textEdit = QTextEdit(self)
    self.textEdit.move(100, 200)
    self.textEdit.resize(500, 30)


    self.pbar = QProgressBar(self)
    self.pbar.setGeometry(100, 350, 532, 25)

    self.setWindowIcon(QtGui.QIcon("barcode.png"))
    self.setWindowTitle(self.title)
    self.setGeometry(self.top,self.left, self.width, self.height)
    self.show()

def scan(self):
    self.completed = 0
    while self.completed < 100:
        self.completed += 0.0001
        self.pbar.setValue(self.completed)

def getFolder(self):
    """ddir = QFileDialog.getExistingDirectory(self, "Open Directory", 
    "C:/Users/dava8001/Desktop/", QFileDialog.ShowDirsOnly | 
    QFileDialog.DontResolveSymlinks)
    ddir = self.textEdit.toPlainText()
    if ddir:
        f = open(ddir, 'r')
        with f:
            data = f.read()
            self.textEdit.toPlainText(data)
    else:
        pass

    self.textEdit(self.getFolder)"""

    name = QFileDialog.getExistingDirectory(self, "Open Directory", "C:/Users/dava8001/Desktop/", QFileDialog.ShowDirsOnly | QFileDialog.DontResolveSymlinks)
    file = open(name, 'r')
    self.editor()
    with file:
        text = file.read()
        self.textEdit.setText(text)

def CloseApp(self):
    reply = QMessageBox.question(self, "Close Message", "Are you sure you 
    want to close?", QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
    if reply == QMessageBox.Yes:
        self.close()

app = QApplication(sys.argv)
window = Window()
sys.exit(app.exec())

Answer 1

Ваша программа может выглядеть примерно так:

import sys
import os
from PyQt5.QtGui     import QIcon
from PyQt5.QtWidgets import (QApplication, QMainWindow, QFileDialog, 
                             QPushButton, QTextEdit, QLineEdit, QToolTip, 
                             QMessageBox, QProgressBar, QWidget,
                             QHBoxLayout, QVBoxLayout)
from PyQt5.QtCore    import QCoreApplication, QBasicTimer, QThread, pyqtSignal


class AThread(QThread):

    # Use the signals to send the information.
    updateSignal = pyqtSignal(list, int) 

    def __init__(self, folder, allFiles):
        super().__init__()
        self.folder  = folder
        self.cons    = 1 if allFiles<100 else allFiles//100+1
        self.indPbar = 1
        self.ind     = 0
        self.files   = []

    def run(self):
        for root, dirs, files in os.walk(self.folder):
            self.updateSignal.emit(["\n{}:".format(root),], self.indPbar)
            for file in files:
                if self.cons == 1:   
                    self.indPbar += 1
                    self.updateSignal.emit([file,], self.indPbar)
                else:
                    self.files.append("{}".format(file))                    
                    self.ind += 1

                if  self.ind >= 100:
                    self.indPbar += 1
                    self.updateSignal.emit(self.files, self.indPbar)
                    self.ind = 0
                    self.cons -= 1
                    self.files = []
                QThread.msleep(1)
            self.updateSignal.emit(self.files, self.indPbar)
            self.files = []            
        self.updateSignal.emit(self.files, 100)                    


class Window(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowIcon(QIcon("E:/_Qt/img/qt-logo.png"))      # "barcode.png"
        self.setWindowTitle("Barcode Scanner")
        self.resize(500, 400)
        self.allFiles = 0

        self.InitWindow()

    def InitWindow(self):
        self.button = QPushButton("Choose Folder Path")
        self.button.clicked.connect(self.getFolder)
        self.lineEdit = QLineEdit("E:/_Qt/Python-Examples/_PyQt5") # "C:/Users/dava8001/Desktop"
        self.lineEdit.setReadOnly(True)

        self.btnScan  = QPushButton("Scan")
        self.btnScan.clicked.connect(
            lambda folder=self.lineEdit.text(): self.scan(self.lineEdit.text()))
        self.btnScan.setEnabled(False)

        self.btnClose = QPushButton("Close")
        self.btnClose.clicked.connect(self.CloseApp)
        self.textEdit = QTextEdit(self)
        self.pbar     = QProgressBar(self)

        centralWidget = QWidget()
        self.setCentralWidget(centralWidget)

        layoutH = QHBoxLayout()
        layoutH.addWidget(self.button)
        layoutH.addStretch(1)
        layoutH.addWidget(self.btnScan)

        layoutV = QVBoxLayout(centralWidget)
        layoutV.addLayout(layoutH)
        layoutV.addWidget(self.lineEdit)
        layoutV.addWidget(self.textEdit)
        layoutV.addWidget(self.pbar)
        layoutV.addWidget(self.btnClose)

    def scan(self, folder):

        self.btnScan.setEnabled(False)
        self.thread = AThread(folder, self.allFiles)
        self.thread.finished.connect(self.closeW)
        self.thread.start()
        self.thread.updateSignal.connect(self.update)

    def update(self, texts, val):
        text = "\n".join(texts)
        self.textEdit.append(text)
        self.pbar.setValue(val)

    def closeW(self):
        self.textEdit.append("--- Directory scan complete! ---")
        self.btnScan.setEnabled(True)

    def getFolder(self):
        options = QFileDialog.DontResolveSymlinks | QFileDialog.ShowDirsOnly 
        folder  = QFileDialog.getExistingDirectory(self, 
                            "Open Folder",
                            self.lineEdit.text(),
                            options=options)
        if folder:
            self.pbar.setValue(0)        
            self.lineEdit.setText(folder) 

            self.textEdit.append("\n{}:".format(folder))
            self.allFiles = 0
            for root, dirs, files in os.walk(folder):
                self.allFiles += len(files)
            self.textEdit.append("    total files: {}".format(self.allFiles))
            self.btnScan.setEnabled(True)
        else:
            self.textEdit.append("Sorry, choose a directory to scan!")
            self.btnScan.setEnabled(False)

    def CloseApp(self):
        reply = QMessageBox.question(self, "Close Message", 
                                     "Are you sure you want to close?", 
                                     QMessageBox.Yes | QMessageBox.No, 
                                     QMessageBox.No)
        if reply == QMessageBox.Yes:
            self.close()


if __name__ == "__main__": 
    app = QApplication(sys.argv)
    app.setStyle('Fusion') 
    window = Window()
    window.show()
    sys.exit(app.exec())