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[libvirt] [PATCH 2/3] example: Redirect --help output to stdout/stderr



When --help is requested, print usage() to stdout.
When an illegal option is passed, print usage to stderr.

Signed-off-by: Philipp Hahn <hahn univention de>
---
 examples/domain-events/events-python/event-test.py |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/examples/domain-events/events-python/event-test.py b/examples/domain-events/events-python/event-test.py
index 9018366..5272e56 100644
--- a/examples/domain-events/events-python/event-test.py
+++ b/examples/domain-events/events-python/event-test.py
@@ -469,9 +469,9 @@ def myDomainEventIOErrorCallback(conn, dom, srcpath, devalias, action, opaque):
 def myDomainEventGraphicsCallback(conn, dom, phase, localAddr, remoteAddr, authScheme, subject, opaque):
     print "myDomainEventGraphicsCallback: Domain %s(%s) %d %s" % (dom.name(), dom.ID(), phase, authScheme)
 
-def usage():
-        print "usage: "+os.path.basename(sys.argv[0])+" [uri]"
-        print "   uri will default to qemu:///system"
+def usage(out=sys.stderr):
+    print >>out, "usage: "+os.path.basename(sys.argv[0])+" [uri]"
+    print >>out, "   uri will default to qemu:///system"
 
 def main():
     try:
@@ -483,7 +483,7 @@ def main():
         sys.exit(2)
     for o, a in opts:
         if o in ("-h", "--help"):
-            usage()
+            usage(sys.stdout)
             sys.exit()
 
     if len(args) >= 1:
-- 
1.7.1


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