From 1694ab2ab3628cead18ba7aa59e134e80675c601 Mon Sep 17 00:00:00 2001
From: John Kacur <jkacur@redhat.com>
Date: Fri, 30 Nov 2018 11:50:34 -0500
Subject: [PATCH 1/2] python-linux-procfs: pflags: Use argparse to create a
 help option

The purpose of this change is to create a -h or --help option.
In addition the handling of pids or process names is improved. Instead of a
command separated list (without spaces), the more standard unix way of
space separated command line arguments are used.

This is explained in the help.

    ./pflags -h
    usage: pflags [-h] [pid [pid ...]]

    Print process flags

    positional arguments:
      pid         a list of pids or names

    optional arguments:
      -h, --help  show this help message and exit

Signed-off-by: John Kacur <jkacur@redhat.com>
---
 pflags-cmd.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pflags-cmd.py b/pflags-cmd.py
index 9228c688e7a2..f180ed505977 100755
--- a/pflags-cmd.py
+++ b/pflags-cmd.py
@@ -15,6 +15,7 @@
 #   General Public License for more details.
 
 import procfs, re, fnmatch, sys
+import argparse
 
 ps = None
 
@@ -35,8 +36,13 @@ def main(argv):
 	global ps
 	ps = procfs.pidstats()
 
+	parser = argparse.ArgumentParser(description='Print process flags')
+	parser.add_argument('pid', nargs='*', help='a list of pids or names')
+	args = parser.parse_args()
+
 	if (len(argv) > 1):
-		pids = reduce(lambda i, j: i + j, map(thread_mapper, argv[1].split(",")))
+		pids = args.pid
+		pids = reduce(lambda i, j: i + j, list(map(thread_mapper, pids)))
 	else:
 		pids = ps.processes.keys()
 
-- 
2.19.2