diff --git a/kitty/data_types.py b/kitty/data_types.py
new file mode 100644
index 000000000..16ece98c3
--- /dev/null
+++ b/kitty/data_types.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
+
+from numpy import zeros, dtype
+
+color_type = dtype([('type', 'u1'), ('r', 'u1'), ('g', 'u1'), ('b', 'u1')])
+
+
+class Line:
+
+    __slots__ = 'char fg bg bold italic reverse strikethrough decoration decoration_fg'.split()
+    continued = False
+
+    def __init__(self, sz: int):
+        self.char = zeros(sz, 'U1')
+        self.fg = zeros(sz, color_type)
+        self.bg = zeros(sz, color_type)
+        self.bold = zeros(sz, bool)
+        self.italic = zeros(sz, bool)
+        self.reverse = zeros(sz, bool)
+        self.strikethrough = zeros(sz, bool)
+        self.decoration = zeros(sz, 'u1')
+        self.decoration_fg = zeros(sz, color_type)