os.system 路径中有空格

Question

我正在尝试使用 os.system 调用 C:/Program Files 中的程序。

该目录名称中的 space 每次尝试都搞砸了。这是我的代码：

cmd = 'C:Program Files\OpenSCAD\openscad.exe -o block0.stl block0.scad'
print cmd
os.system(cmd)

Space毁了东西。我已经尝试了这里列出的大约五个标点符号版本（包括其他帖子中推荐的一些）以及源标点符号，Python 看到的结果字符串，以及 os.system.[=27= 的结果]

如何正确标点符号？

cmd = 'C:Program Files\OpenSCAD\openscad.exe -o block0.stl block0.scad'

C:Program Files\OpenSCAD\openscad.exe -o block0.stl block0.scad
'C:Program' is not recognized as an internal or external command,
operable program or batch file.

cmd = 'C:"Program Files"\OpenSCAD\openscad.exe -o block0.stl block0.scad'

C:"Program Files"\OpenSCAD\openscad.exe -o block0.stl block0.scad
The system cannot find the path specified.

cmd = 'C:"Program Files\OpenSCAD\openscad.exe" -o block0.stl block0.scad'

C:"Program Files\OpenSCAD\openscad.exe" -o block0.stl block0.scad
The system cannot find the path specified.

cmd = 'C:\"Program Files\OpenSCAD\openscad.exe\" -o block0.stl block0.scad'

一样

cmd = 'C:""Program Files\OpenSCAD\openscad.exe"" -o block0.stl block0.scad'

C:""Program Files\OpenSCAD\openscad.exe"" -o block0.stl block0.scad
'C:""Program' is not recognized as an internal or external command,
operable program or batch file.

cmd = r'C:Program Files\OpenSCAD\openscad.exe -o block0.stl block0.scad'

(推荐here)

C:Program Files\OpenSCAD\openscad.exe -o block0.stl block0.scad
'C:Program' is not recognized as an internal or external command,
operable program or batch file.

Answer 1

你几乎有几次。问题是您要么需要放置双反斜杠，因为反斜杠是 Python 字符串中的转义字符，要么使用带有 r 前缀的原始字符串。但是，在任何一种情况下，您都必须在 C: 之后有一个反斜杠，并在包含空格的名称部分周围加上引号。以下任何示例都应该有效：

cmd = 'C:\"Program Files\OpenSCAD\openscad.exe" -o block0.stl block0.scad'
cmd = r'C:\"Program Files\OpenSCAD\openscad.exe" -o block0.stl block0.scad'
cmd = "\"C:\Program Files\OpenSCAD\openscad.exe\" -o block0.stl block0.scad"
cmd = r'"C:\Program Files\OpenSCAD\openscad.exe" -o block0.stl block0.scad'

请注意，您将无法使用双引号和原始 Python 字符串，因为您无法转义双引号和字符串中的路径。

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