add IPython lexer for pygments

lexers.py

@@ -0,0 +1,22 b''
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+from pygments.lexers import PythonLexer, BashLexer
+from pygments.lexer import bygroups, using
+from pygments.token import Keyword, Operator, Name, Text
+
+#-----------------------------------------------------------------------------
+# Classes
+#-----------------------------------------------------------------------------
+
+class IPythonLexer(PythonLexer):
+    name = 'IPython'
+    aliases = ['ip', 'ipython']
+    filenames = ['*.ipy']
+    tokens = PythonLexer.tokens.copy()
+    tokens['root'] = [
+        (r'(\%+)(\w+)\s+(\.*)(\n)', bygroups(Operator, Keyword, using(BashLexer), Text)),
+        (r'(\%+)(\w+)\b', bygroups(Operator, Keyword)),
+        (r'^(!)(.+)(\n)', bygroups(Operator, using(BashLexer), Text)),
+    ] + tokens['root']