我如何编写一个既接受argparse的命令行参数又接受从类创建的对象的参数的程序？

Question

如何编写既接受argparse命令行参数又接受__init__参数的程序，以便程序可以在命令行之外使用？我也想知道在导出文件时是否需要显式使用os.getcwd()。非常感谢你的帮助！

class MyClass(object):
     def __init__(self, file='', duplicate_column_name='', file_destination=''):
         self.__file1 = file
         self.__duplicate = duplicate_column_name
         self.__file_dest = file_destination


    if __name__ == __main__:
         parser = argparse.ArgumentParser(add_help=True, description="Allows users to filter CSV file in a variety of ways.")
         parser.add_argument('-f', action='store', dest = 'file', help='Store the name of the csv file you want converted')
         parser.add_argument('-c', action='store', dest = 'column', help='Store the name of the column you want filtered.')
         parser.add_argument('-d', action='store', dest = 'file_destination', default= str( os.getcwd() ) + "/filteredcsvfile.csv", help= "Store the name of the file you'd like the program to create")

         if len(sys.argv) <= 2:
             parser.print_help()
             sys.exit(1)

         cmd_args = parser.parse_args()
         file = cmd_args.file
         duplicate_column_name = cmd_args.column
         file_destination = cmd_args.file_destination