From f382ab25caeca70fe6814821160651511c0f420d Mon Sep 17 00:00:00 2001
From: Ross Lagerwall <rosslagerwall@gmail.com>
Date: Sun, 27 Mar 2011 17:34:22 +0200
Subject: [PATCH] Issue #11692: Remove unnecessary demo functions in subprocess
 module.

---
 Lib/subprocess.py | 65 -----------------------------------------------
 Misc/NEWS         |  2 ++
 2 files changed, 2 insertions(+), 65 deletions(-)

diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 4c6635352fd..40f9636ff96 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1723,68 +1723,3 @@ class Popen(object):
             """Kill the process with SIGKILL
             """
             self.send_signal(signal.SIGKILL)
-
-
-def _demo_posix():
-    #
-    # Example 1: Simple redirection: Get process list
-    #
-    plist = Popen(["ps"], stdout=PIPE).communicate()[0]
-    print("Process list:")
-    print(plist)
-
-    #
-    # Example 2: Change uid before executing child
-    #
-    if os.getuid() == 0:
-        p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
-        p.wait()
-
-    #
-    # Example 3: Connecting several subprocesses
-    #
-    print("Looking for 'hda'...")
-    p1 = Popen(["dmesg"], stdout=PIPE)
-    p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
-    print(repr(p2.communicate()[0]))
-
-    #
-    # Example 4: Catch execution error
-    #
-    print()
-    print("Trying a weird file...")
-    try:
-        print(Popen(["/this/path/does/not/exist"]).communicate())
-    except OSError as e:
-        if e.errno == errno.ENOENT:
-            print("The file didn't exist.  I thought so...")
-            print("Child traceback:")
-            print(e.child_traceback)
-        else:
-            print("Error", e.errno)
-    else:
-        print("Gosh.  No error.", file=sys.stderr)
-
-
-def _demo_windows():
-    #
-    # Example 1: Connecting several subprocesses
-    #
-    print("Looking for 'PROMPT' in set output...")
-    p1 = Popen("set", stdout=PIPE, shell=True)
-    p2 = Popen('find "PROMPT"', stdin=p1.stdout, stdout=PIPE)
-    print(repr(p2.communicate()[0]))
-
-    #
-    # Example 2: Simple execution of program
-    #
-    print("Executing calc...")
-    p = Popen("calc")
-    p.wait()
-
-
-if __name__ == "__main__":
-    if mswindows:
-        _demo_windows()
-    else:
-        _demo_posix()
diff --git a/Misc/NEWS b/Misc/NEWS
index e7446f3f488..016d07eba19 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -87,6 +87,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #11692: Remove unnecessary demo functions in subprocess module.
+
 - Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
   are now zeroed on creation.  This matches the behaviour specified by the
   documentation.