Python 错误:“ValueError:需要超过 1 个值才能解压"
问题描述
在 Python 中,当我运行这段代码时:
In Python, when I run this code:
from sys import argv
script, user_name =argv
prompt = '>'
print "Hi %s, I'm the %s script." % (user_name, script)
我收到此错误:
Traceback (most recent call last):
script, user_name =argv
ValueError: need more than 1 value to unpack
这个错误是什么意思?
解决方案
可能你没有在命令行上提供参数.在这种情况下,sys.argv
只包含一个值,但它必须有两个才能为 user_name
和 script
提供值.
Probably you didn't provide an argument on the command line. In that case, sys.argv
only contains one value, but it would have to have two in order to provide values for both user_name
and script
.
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