1berry/cpython
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merged revisions 88352 via svnmerge from

Browse Source 
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r88352 | gregory.p.smith | 2011-02-05 13:47:25 -0800 (Sat, 05 Feb 2011) | 3 lines

  issue7678 - Properly document how to replace a shell pipeline so that SIGPIPE
  happens when the end exits before the beginning.
........
This commit is contained in:
Gregory P. Smith 2011-02-05 21:51:27 +00:00
parent f7ef4de3d5
commit 8095b6548b
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Doc/library/subprocess.rst
View File

@ -465,8 +465,11 @@ Replacing shell pipeline
==>
p1 = Popen(["dmesg"], stdout=PIPE)
p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
p1.stdout.close() # Allow p1 to receive a SIGPIPE if p2 exits.
output = p2.communicate()[0]
The p1.stdout.close() call after starting the p2 is important in order for p1
to receive a SIGPIPE if p2 exits before p1.
Replacing :func:`os.system`
^^^^^^^^^^^^^^^^^^^^^^^^^^^