Christian Heimes added the comment:
I'm with Chris. The information should be stored in the os module. I suggest
os.shell var or os.get_shell() function like this:
def get_shell():
for path in confstr("CS_PATH").split(pathsep):
sh = sep.join((path, "sh"))
try:
mode = stat(sh).st_mode
except OSError:
pass
else:
if st.S_ISREG(mode):
return sh
raise FileNotFound("sh")
According to all examples S_ISREG() is sufficient here.
On Windows the function should use the env var COMSPEC instead of hard coding
"cmd.exe".
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<http://bugs.python.org/issue16353>
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