Question

我运行此代码：

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

但是当我运行它时，我收到了这个错误：

ValueError: need more than 1 value to unpack

Answer 1

script, first, second, third = argv'将'argv（必须包含4个项目）解包到相应的变量中。显然，你没有将3个参数传递给你的脚本。

请尝试检查：

if len(argv) == 4:
    script, first, second, third = argv
else:
    print "Not enough arguments"

Answer 2

这意味着您没有为python脚本提供足够的参数。此错误表示您尝试解压缩的值多于列表中的值。像python file.py a b c一样运行。

试试这段代码：

if len(argv) == 4:
    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
else:
    print "Not enough arguments"

Python解包错误需要更多值来解压缩

2 个答案: