added punycode script

punycode.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+import argparse
+import sys
+
+
+class Domain(object):
+    def __init__(self, domain):
+        """Constructor"""
+        if sys.version_info[0] < 3:
+            domain = domain.decode('utf-8').encode('utf-8')
+            idna = domain.decode('utf-8').encode('idna')
+            self.ascii = idna
+            self.utf_8 = idna.decode('idna').encode('utf-8')
+        else:
+            idna = bytes(domain, 'idna')
+            self.ascii = idna.decode('ascii')
+            self.utf_8 = idna.decode('idna')
+        if self.ascii == self.utf_8:
+            self.type = 'ascii'
+            self.utf_8 = None
+        else:
+            if self.utf_8 == domain:
+                self.type = 'unicode'
+            else:
+                self.type = 'punycode'
+
+    def display(self):
+        print('INPUT: \x1B[1m{}\x1B[0m\nASCII: \x1B[1m{}\x1B[0m'
+              .format(self.type, self.ascii))
+        if self.utf_8 is not None:
+            print('UTF-8: \x1B[1m{}\x1B[0m'.format(self.utf_8))
+
+def parse_arguments(sysargs):
+    """Parse and store arguments."""
+    desc = 'A simple punycode to unicode and back converter.'
+    p = argparse.ArgumentParser(description=desc)
+
+    p.add_argument('domain', help='domain name to convert')
+
+    # Store the supplied args
+    return p.parse_args(sysargs)
+
+
+def main(main_sysargs):
+    args = parse_arguments(main_sysargs[1:])
+
+    domain = Domain(args.domain)
+    domain.display()
+
+
+if __name__ == '__main__':
+    main(sys.argv)
+