[英]double quote escaping in os.system on windows
I want to escape '"' and all other wild chars in program name and arguments, so I try to double quote them. and I can do this in cmd.exe 我想在程序名称和参数中转义'“'和所有其他通配符,所以我尝试将它们双引号。可以在cmd.exe中执行此操作
C:\bay\test\go>"test.py" "a" "b" "c"
hello
['C:\\bay\\test\\go\\test.py', 'a', 'b', 'c']
but what's wrong with the following code using os.sytem? 但是以下使用os.sytem的代码怎么了?
cmd = '"test.py" "a" "b" "c"'
print cmd
os.system(cmd)
its output: 其输出:
C:\bay\test\go>test2.py
"test.py" "a" "b" "c"
'test.py" "a" "b" "c' is not recognized as an internal or external command,
operable program or batch file.
Why is the whole string '"test.py" "a" "b" "c"' recognized as a single command? 为什么整个字符串'“ test.py”“ a”“ b”“ c”'被识别为单个命令? But the following example isn't: 但是以下示例不是:
cmd = 'test.py a b c'
print cmd
os.system(cmd)
C:\bay\test\go>test2.py
test.py a b c
hello
['C:\\bay\\test\\go\\test.py', 'a', 'b', 'c']
Thanks! 谢谢!
Furthing google comes this page 谷歌进一步出现此页面
http://ss64.com/nt/syntax-esc.html http://ss64.com/nt/syntax-esc.html
To launch a batch script which itself requires "quotes"
CMD /k ""c:\batch files\test.cmd" "Parameter 1 with space" "Parameter2 with space""
cmd = '""test.py" "a" "b" "c""'
does work! cmd = '""test.py" "a" "b" "c""'
有效!
Actually, it just work as design. 实际上,它只是作为设计工作。 You can NOT use os.system like that. 您不能像这样使用os.system。 See this: http://mail.python.org/pipermail/python-bugs-list/2000-July/000946.html 看到这个: http : //mail.python.org/pipermail/python-bugs-list/2000-July/000946.html
Try with os.system('python "test.py" "a" "b" "c"')
尝试使用os.system('python "test.py" "a" "b" "c"')
You can also use subprocess module for that kind of purpose, 您也可以将子流程模块用于此类目的,
please take a look this thread 请看看这个线程
UPDATE :When I do, os.system('"test.py" "a" "b" "c"')
, I got similar errors, but not on os.system('test.py "a" "b" "c"')
, So, I like to assume that first parameter should not be double-quoted 更新 :当我这样做时, os.system('"test.py" "a" "b" "c"')
,我遇到了类似的错误,但是没有在os.system('test.py "a" "b" "c"')
,因此,我想假设第一个参数不应用双引号引起来
将参数括在方括号中,即可正常工作。
CMD /k ("c:\batch files\test.cmd" "Parameter 1 with space" "Parameter2 with space")
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