PyQt5 支持(本机)文件对话框：打开文件，打开多个文件和保存文件。通过调用 PyQt5 中包含的函数，你将获得默认文件对话框，你无需从头开始重新创建这些对话框。你需要导入 QFileDialog。

PyQt5 文件对话框示例

使用的方法是 QFileDialog.getOpenFileName()，QFileDialog.getOpenFileNames()，QFileDialog.getSaveFileName()。方法参数允许你指定默认目录，文件类型和默认文件名。

下面的代码将显示所有文件对话框：

import sys

from PyQt5.QtWidgets import QApplication, QWidget, QInputDialog, QLineEdit, QFileDialog

from PyQt5.QtGui import QIcon

class App(QWidget):

def __init__(self):

super().__init__()

self.title = 'PyQt5 file dialogs - tastones.com'

self.left = 10

self.top = 10

self.width = 640

self.height = 480

self.initUI()

def initUI(self):

self.setWindowTitle(self.title)

self.setGeometry(self.left, self.top, self.width, self.height)

self.openFileNameDialog()

self.openFileNamesDialog()

self.saveFileDialog()

self.show()

def openFileNameDialog(self):

options = QFileDialog.Options()

options |= QFileDialog.DontUseNativeDialog

fileName, _ = QFileDialog.getOpenFileName(self,"QFileDialog.getOpenFileName()", "","All Files (*);;Python Files (*.py)", options=options)

if fileName:

print(fileName)

def openFileNamesDialog(self):

options = QFileDialog.Options()

options |= QFileDialog.DontUseNativeDialog

files, _ = QFileDialog.getOpenFileNames(self,"QFileDialog.getOpenFileNames()", "","All Files (*);;Python Files (*.py)", options=options)

if files:

print(files)

def saveFileDialog(self):

options = QFileDialog.Options()

options |= QFileDialog.DontUseNativeDialog

fileName, _ = QFileDialog.getSaveFileName(self,"QFileDialog.getSaveFileName()","","All Files (*);;Text Files (*.txt)", options=options)

if fileName:

print(fileName)

if __name__ == '__main__':

app = QApplication(sys.argv)

ex = App()

sys.exit(app.exec_())