import argparse def fun(): print(i) parser = argparse.ArgumentParser(description='.....') #nagrs="+" 至少给-l 选项传递1个参数， parser.add_argument("-l ...

The Python logging module provides a flexible and powerful way to log messages from your application. It allows you to log messages with different levels of severity, such as debug, info, warning, ...

Error message for the --min-max argument. $ python3 examples/integer.py --min-max -1 usage: integer.py [-h] [--min-max MIN_MAX] [--min MIN] [--max MAX] [--any ANY ...