--- a/utils/key2pub.py
+++ b/utils/key2pub.py
@@ -1,9 +1,9 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3

 import sys
 try:
        from M2Crypto import RSA
-except ImportError, e:
+except ImportError as e:
        sys.stderr.write('ERROR: Failed to import the "M2Crypto" module: %s\n' % e.message)
        sys.stderr.write('Please install the "M2Crypto" Python module.\n')
        sys.stderr.write('On Debian GNU/Linux the package is called "python-m2crypto".\n')
@@ -80,7 +80,7 @@

 static struct pubkey keys[] = {
 ''')
-    for n in xrange(n + 1):
+    for n in range(n + 1):
         output.write('	KEYS(e_%d, n_%d),\n' % (n, n))
     output.write('};\n')
     pass
@@ -117,7 +117,7 @@

 static const struct key_params keys[] = {
 ''')
-    for n in xrange(n + 1):
+    for n in range(n + 1):
         output.write('	KEYS(e_%d, n_%d),\n' % (n, n))
     output.write('};\n')

@@ -135,7 +135,7 @@
     mode = None

 if not mode in modes:
-    print 'Usage: %s [%s] input-file... output-file' % (sys.argv[0], '|'.join(modes.keys()))
+    print('Usage: %s [%s] input-file... output-file' % (sys.argv[0], '|'.join(modes.keys())))
     sys.exit(2)

 output = open(outfile, 'w')