diff options
Diffstat (limited to 'Doc/library/subprocess.rst')
| -rw-r--r-- | Doc/library/subprocess.rst | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst index 3da4574..ab20889 100644 --- a/Doc/library/subprocess.rst +++ b/Doc/library/subprocess.rst @@ -954,20 +954,23 @@ been imported from the :mod:`subprocess` module. Replacing /bin/sh shell backquote ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -:: +.. code-block:: bash output=`mycmd myarg` - # becomes - output = check_output(["mycmd", "myarg"]) +becomes:: + + output = check_output(["mycmd", "myarg"]) Replacing shell pipeline ^^^^^^^^^^^^^^^^^^^^^^^^ -:: +.. code-block:: bash output=`dmesg | grep hda` - # becomes + +becomes:: + 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. @@ -977,10 +980,14 @@ The p1.stdout.close() call after starting the p2 is important in order for p1 to receive a SIGPIPE if p2 exits before p1. Alternatively, for trusted input, the shell's own pipeline support may still -be used directly:: +be used directly: + +.. code-block:: bash output=`dmesg | grep hda` - # becomes + +becomes:: + output=check_output("dmesg | grep hda", shell=True) |