Issue1748

in python i get:
OSError: Drive already SUBSTed

in jython i get:
OSError


import subprocess
p_subst = subprocess.Popen('subst z: "c:\\"',  shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
errmsg = p_subst.communicate()[0]
if p_subst.returncode != 0:
    raise OSError(errmsg)

also doesnt output 'Drive already SUBSTed'

import os
os.system('subst z: "c:\\"')

Is this a limitation of Windows? It works fine on Unix-list systems:

>>> import os
>>> os.system("ls ~/jythondev/jython27/dist/bin/*")
/Users/jbaker/jythondev/jython27/dist/bin/easy_install		/Users/jbaker/jythondev/jython27/dist/bin/pip
/Users/jbaker/jythondev/jython27/dist/bin/easy_install-2.7	/Users/jbaker/jythondev/jython27/dist/bin/pip2
/Users/jbaker/jythondev/jython27/dist/bin/jython		/Users/jbaker/jythondev/jython27/dist/bin/pip2.7
/Users/jbaker/jythondev/jython27/dist/bin/jython.bat
0

Unix-like

Looks like a basic limitation of working on Windows for Jython. Revisit at a later time.

There have been numerous fixes in subprocess since this issue. This works for me in Jython 2.7.2a1:

C:\Users\Jeff\Documents\Jython\bugs>jython
Jython 2.7.2a1+ (default:d74f8c2cd56f, Feb 24 2018, 17:18:53)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.8.0_151
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.system("subst a: .")
Drive already SUBSTed
1
>>> import subprocess
>>> p_subst = subprocess.Popen('subst z: "c:\\"',  shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
>>> p_subst = subprocess.Popen('subst a: "."',  shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
>>> errmsg = p_subst.communicate()[0]
>>> errmsg
'Drive already SUBSTed\r\n'

Propose to close.