[issue23750] Clarify difference between os.system/subprocess.call in section Replacing os.system()

Martin Panter added the comment: Here is a patch: * Use different return value variable names and point out that they are encoded differently * Add another bullet point about signal handling * Fix os.system() documentation of the return value. My understanding is it is the C standard that

[issue23750] Clarify difference between os.system/subprocess.call in section Replacing os.system()

New submission from Andreas Sommer: Reading over the section Replacing os.system() (https://docs.python.org/2/library/subprocess.html#replacing-os-system), one might assume that the return value of os.system and subprocess.call are equivalent. status = os.system(mycmd + myarg) #

[issue23750] Clarify difference between os.system/subprocess.call in section Replacing os.system()

Martin Panter added the comment: Another difference is that (at least POSIX) system() blocks SIGINT and SIGQUIT while the child is running. Compare: $ python3 -c 'print(Waiting); import os; print(Returned, os.system(sleep 3 exit 3))' Sleeping Returned 768 $ python3 -c 'print(Sleeping);