带有 PySide2 的文件浏览器:获取文件的路径，然后杀死 GUI [英] File Browser with PySide2: get the path of the file and then kill the GUI

问题描述

我有以下代码并希望执行以下操作:

I have the following code and want to do the following:

• 最重要的一点:一旦我单击文件并获取其文件路径，我希望 GUI 退出，因为我只需将该路径提供给另一个脚本 (another_script)，然后我将导入该脚本

• Most important point: Once I clicked on the file and get its filepath, I want the GUI to quit because I would then just feed that path to another script (another_script) which I would then import

我的问题是，在脚本成功打印所选文件的路径后，GUI 不会自行终止，我无法运行 another_script 并且卡在终端中

My problems is that, after the script successfully prints the path of the selected file, the GUI does not kill itself and i cannot run another_script and I'm stuck in the terminal

import sys
from PySide2.QtWidgets import QApplication, QWidget, QInputDialog, QLineEdit, QFileDialog
from PySide2.QtGui import QIcon

class App(QWidget):

    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):

        self.openFileNameDialog()

    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)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = App()
    sys.exit(app.exec_())
import another_script

推荐答案

即使您选择了文件，事件循环仍将继续运行，一个可能的解决方案是使用 QTimer 调用 QXApplication.quit() 但有仍然是一个问题:该方法将使 exec_() 方法返回 0，该方法由 sys.exit() 获取，因此应用程序将被关闭.但以上所有都是不必要的，因为如果您只想获取文件的路径，那么您不需要使用 QWidget，您可以使用以下内容:

Even though you have selected the file the event loop will still continue to run, a possible solution is to call QXApplication.quit() with a QTimer but there is still a problem: that method will make the exec_() method return 0 which is taken by sys.exit() and consequently the application will be closed. But all of the above is unnecessary since if you just want to get the path of a file then you don't need to use a QWidget, you can use the following:

import sys
from PySide2.QtWidgets import QApplication, QFileDialog


def get_filename():
    app = QApplication([])
    options = QFileDialog.Options()
    options |= QFileDialog.DontUseNativeDialog
    fileName, _ = QFileDialog.getOpenFileName(
        None,
        "QFileDialog.getOpenFileName()",
        "",
        "All Files (*);;Python Files (*.py)",
        options=options,
    )
    return fileName


if __name__ == "__main__":
    filename = get_filename()
    if filename:
        print(filename)

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