First drop of code :-)

example.py

@@ -0,0 +1,23 @@
+import sys
+from zttf.ttfile import TTFile
+
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print("Usage: {} <font filename>".format(sys.argv[0]))
+        sys.exit(0)
+
+    t = TTFile(sys.argv[1])
+    print("Is valid? {}".format(t.is_valid))
+    if not t.is_valid:
+        sys.exit(0)
+
+    print(t.faces)
+    print(t.faces[0].font_family)
+    print(t.faces[0].name)
+    print(t.faces[0].italic_angle)
+
+    subset = [ord('H'), ord('e'), ord('l'), ord('o')]
+    font_subset = t.faces[0].make_subset(subset)
+    with open('font_subset.ttf', 'wb') as fh:
+        fh.write(font_subset.output())