标准文件打开保存框 QFileDialog

1、代码

from PyQt5 import QtWidgets  
from PyQt5.QtWidgets import QFileDialog  class MyWindow(QtWidgets.QWidget):  def __init__(self):  super(MyWindow,self).__init__()  self.myButton = QtWidgets.QPushButton(self)  self.myButton.setObjectName("myButton")  self.myButton.setText("Test")  self.myButton.clicked.connect(self.msg)  def msg(self):  directory1 = QFileDialog.getExistingDirectory(self,  "选取文件夹",  "C:/")                                 #起始路径 print(directory1)  fileName1, filetype = QFileDialog.getOpenFileName(self,  "选取文件",  "C:/",  "All Files (*);;Text Files (*.txt)")   #设置文件扩展名过滤,注意用双分号间隔 print(fileName1,filetype)  files, ok1 = QFileDialog.getOpenFileNames(self,  "多文件选择",  "C:/",  "All Files (*);;Text Files (*.txt)")  print(files,ok1)  fileName2, ok2 = QFileDialog.getSaveFileName(self,  "文件保存",  "C:/",  "All Files (*);;Text Files (*.txt)")  if __name__=="__main__":    import sys    app=QtWidgets.QApplication(sys.argv)    myshow=MyWindow()  myshow.show()  sys.exit(app.exec_())