[dpdk-dev] [PATCH] bug: Use correct arguments in run.py

["McCullough, Harrison" <harrison_mccullough@labs.att.com>]

When using run.py it would occasionally ignore the given command line
arguments because the wrong variable was used.  Fixed this, along with
minor changes to reflect more idiomatic Python usage.

Signed-off-by: Harrison McCullough <harrison_mccullough@labs.att.com>
---
 tools/run.py | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/tools/run.py b/tools/run.py
index ec6f45d..f5ec22c 100755
--- a/tools/run.py
+++ b/tools/run.py
@@ -96,7 +96,7 @@ def find_file(arg, t):
     for f in file_list('.', t):
         if os.path.basename(f) == fn:
             return f
-    return "" 
+    return None
 
 def parse_args():
     ''' Parse the command arguments '''
@@ -118,7 +118,7 @@ def parse_args():
         print("Run '%s --usage' for further information" % sys.argv[0])
         sys.exit(1)
 
-    for opt, arg in opts:
+    for opt, _ in opts:
         if opt == "--help" or opt == "-h" or opt == "--usage" or opt == "-u":
             usage()
             sys.exit(0)
@@ -128,13 +128,12 @@ def parse_args():
         if opt == "--setup" or opt == "-s":
             run_flag = False
     
-    arg = sys.argv[1:]
-    if arg == "":
+    if not args or len(args) > 1:
         usage()
         sys.exit(1)
 
-    fn = find_file(arg[0], cfg_ext)
-    if fn != "":
+    fn = find_file(args[0], cfg_ext)
+    if fn:
         cfg_file = fn
 
 def load_cfg():
-- 
1.9.1