Python 使用PyQt5 完成选择文件或目录的对话框方法

如下所示：importsysfromPyQt5.QtWidgetsimportQMainWindow,QApplication,QTextEdit,QAction,QFileDialogfromPyQt5.QtGuiim

如下所示：

import sys
from PyQt5.QtWidgets import QMainWindow,QApplication,QTextEdit,QAction,QFileDialog
from PyQt5.QtGui import QIcon

class Example(QMainWindow):
 def __init__(self):
 super(Example, self).__init__()
 self.initUI()
 def initUI(self):
 self.textEdit = QTextEdit()
 self.setCentralWidget(self.textEdit)
 self.statusBar()

 openfile = QAction(QIcon(r'C:\Users\Administrator\PycharmProjects\QT\picture\文件.jpg'),'open',self)
 openfile.setShortcut("Ctrl + 0")
 openfile.setStatusTip('open new file')
 openfile.triggered.connect(self.showDialog)

 menubar = self.menuBar()
 filemune = menubar.addMenu('$File')
 filemune.addAction(openfile)

 self.setGeometry(300,300,300,300)
 self.setWindowTitle('FIEL dialog')
 self.show()
 def showDialog(self):
 fname = QFileDialog.getOpenFileName(self,'open file', '/')
 if fname[0]:
 try:
 f = open(fname[0], 'r')
 with f:
 data = f.read()
 self.textEdit.setText(data)
 except:
 self.textEdit.setText("打开文件失败，可能是文件内型错误")
if __name__ == "__main__":
 app = QApplication(sys.argv)
 ex = Example()
 sys.exit(app.exec_())

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