以下代码采用可在 Python 端检索的单个字符串值。如何用带空格的句子字符串来做到这一点？
from sys import argv
script, firstargument = argv
print "The script is called:", script
print "Your first variable is:", firstargument
要运行它，我会像这样传递参数:
$ python test.py firstargument
哪个会输出
The script is called:test.py
Your first variable is:firstargument
示例输入可以是“Hello world the program runs”，我想将其作为命令行参数传递并存储在“第一个”变量中。
请您参考如下方法:
argv 将是 shell 解析的所有参数的列表。
如果我做
#script.py
from sys import argv
print argv
$python script.py hello, how are you
['script.py','hello','how','are','you]
脚本的名称始终是列表中的第一个元素。如果我们不使用引号，每个单词也会成为列表的一个元素。
print argv[1]
print argv[2]
$python script.py hello how are you
hello
how
但是如果我们使用引号，
$python script.py "hello, how are you"
['script.py','hello, how are you']
所有单词现在都是列表中的一项。所以做这样的事情
print "The script is called:", argv[0] #slicing our list for the first item
print "Your first variable is:", argv[1]
或者如果您出于某种原因不想使用引号:
print "The script is called:", argv[0] #slicing our list for the first item
print "Your first variable is:", " ".join(argv[1:]) #slicing the remaining part of our list and joining it as a string.
$python script.py hello, how are you
$The script is called: script.py
$Your first variable is: hello, how are you
