main.py 文件源码

def _select_file(self):
        graphical_image_filters = [' '.join(el) for el in self._extension_filters] + ['All files (*)']

        open_file, used_filter = QFileDialog().getSaveFileName(caption='Select the output file',
                                                               filter=';;'.join(graphical_image_filters))

        if not any(open_file.endswith(el[0]) for el in self._extension_filters):
            extension_from_filter = list(filter(lambda v: ' '.join(v) == used_filter, self._extension_filters))
            if extension_from_filter:
                extension = extension_from_filter[0][0]
            else:
                extension = self._extension_filters[0][0]

            open_file += '.{}'.format(extension)

        if open_file:
            self.outputFile_box.setText(open_file)
            self._update_ok_button()