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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def choose_encoding(cls, parent, path, encoding):
 """ Show the encodings dialog and returns the user choice. :param parent: parent widget. :param path: file path :param encoding: current file encoding :return: selected encoding """

        dlg = cls(parent, path, encoding)
        dlg.exec_()
        return dlg.ui.comboBoxEncodings.current_encoding