1 files changed, 13 insertions, 11 deletions
diff --git a/Tools/scripts/rgrep.py b/Tools/scripts/rgrep.py
index b644206..1917e05 100755
--- a/Tools/scripts/rgrep.py
+++ b/Tools/scripts/rgrep.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Reverse grep.
 
@@ -9,8 +9,9 @@ import sys
 import re
 import getopt
 
+
 def main():
-    bufsize = 64*1024
+    bufsize = 64 * 1024
     reflags = 0
     opts, args = getopt.getopt(sys.argv[1:], "i")
     for o, a in opts:
@@ -23,12 +24,12 @@ def main():
     pattern, filename = args
     try:
         prog = re.compile(pattern, reflags)
-    except re.error, msg:
-        usage("error in regular expression: %s" % str(msg))
+    except re.error as msg:
+        usage("error in regular expression: %s" % msg)
     try:
         f = open(filename)
-    except IOError, msg:
-        usage("can't open %s: %s" % (repr(filename), str(msg)), 1)
+    except IOError as msg:
+        usage("can't open %r: %s" % (filename, msg), 1)
     f.seek(0, 2)
     pos = f.tell()
     leftover = None
@@ -49,16 +50,17 @@ def main():
             del lines[0]
         else:
             leftover = None
-        lines.reverse()
-        for line in lines:
+        for line in reversed(lines):
             if prog.search(line):
-                print line
+                print(line)
+
 
 def usage(msg, code=2):
     sys.stdout = sys.stderr
-    print msg
-    print __doc__
+    print(msg)
+    print(__doc__)
     sys.exit(code)
 
+
 if __name__ == '__main__':
     main()