问题
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
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?
cmd = '"test.py" "a" "b" "c"'
print cmd
os.system(cmd)
its output:
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? But the following example isn't:
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!
回答1:
Try with os.system('python "test.py" "a" "b" "c"')
You can also use subprocess module for that kind of purpose,
please take a look this thread
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
回答2:
Furthing google comes this page
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!
回答3:
Actually, it just work as design. You can NOT use os.system like that. See this: http://mail.python.org/pipermail/python-bugs-list/2000-July/000946.html
回答4:
Enclose the arguments in brackets, it works.
CMD /k ("c:\batch files\test.cmd" "Parameter 1 with space" "Parameter2 with space")
来源：https://stackoverflow.com/questions/1912818/double-quote-escaping-in-os-system-on-windows