在python3中用argv出错? 400 报错

在python3中用argv出错? 400 报错

在python3.3.2中输入以下代码：

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)

运行出错：

Traceback (most recent call last):
  File "D:\Exercise\ex13.py", line 3, in <module>
    script, first, second, third = argv
ValueError: need more than 1 value to unpack

请问错在哪里？