QT：如何将程序生成的文件保存到用户机器中

Question

我有一个 PyQt 程序，它从用户那里获取一个文件进行处理，然后相应地创建一个新文件。 我希望用户能够将新创建的文件下载/保存到他们的机器/桌面...

这是上传代码：

def open_dialog_box(self):
    #To just print the name of file
     filename = QFileDialog.getOpenFileName()
     filename = filename[0]
     basename = os.path.basename(filename)

def pushButton_2_handler(self):
    path = QFileDialog.getOpenFileName()
    path = path[0]
    basename = os.path.basename(path)
    filename, file_extension = os.path.splitext(basename)
    print(path)
    print(filename)
    print(file_extension)
    self.textBrowser_fileSelectedName.clear()
    self.textBrowser_fileSelectedName.append(str(basename))

Answer 1

您想使用另一个QFileDialog ，但这个 QFileDialog 将设置为返回用户键入的选定文件夹/自定义名称。

def save_file(self):

    # Open a dialog so that the user can select a target location.
    dialog = QFileDialog()
    dialog.setWindowTitle("Select a location to save your file.")
    dialog.setAcceptMode(QFileDialog.AcceptSave)
    dialog.exec_()
    if not dialog.selectedFiles(): # If the user closed the choice window without selecting anything.
        return
    else:
        path_to_file = dialog.selectedFiles()[0]

    # Create that file and work on it, for example:
    with open(path_to_file + ".txt") as file:
        file.write("Hello there!")