在Python中使用命令行参数:了解sys.argv [英] Using command line arguments in Python: Understanding sys.argv

问题描述

我目前正在学习困难的方式学习Python".我认为该示例可能已过时，因此我想在此获得反馈.

I'm currently going through Learn Python The Hard Way. I think this example might be out dated so I wanted to get feedback here on it.

我正在使用Python 3.1

I'm using Python 3.1

from sys import argv

script, first, second, third = argv

print("the script is called:", (script))
print("your first variable is:", (first))
print("your second variable is:", (second))
print("your third variable is:", (third))

我收到此错误:

Traceback (most recent call last):
  File "/path/ch13.py", line 3, in <module>
    script, first, second, third, bacon = argv
ValueError: need more than 1 value to unpack

你知道怎么了吗?

推荐答案

您忘记了将参数传递给脚本，例如foo.py bar baz quux.

You forgot to pass arguments to the script, e.g. foo.py bar baz quux.

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