操作系统路径中有空格

Question

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

那个目录名中的空格把每次尝试都弄糟了。这是我的密码：

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

太空会毁掉一切。我试过这里列出的五个标点符号版本（包括其他文章中推荐的一些版本），包括源标点符号、Python看到的结果字符串以及os.system的结果。你知道吗

你怎么给它加标点符号才能正确？你知道吗

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'

同样的事情

---

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

你差点吃了好几次。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，在这两种情况下，C:后面必须有反斜杠，名称中包含空格的部分必须用引号括起来。以下任何一个例子都应该起作用：

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，因为您将无法转义字符串中的双引号和路径。你知道吗