add caching decorator

1 files changed, 8 insertions, 0 deletions

diff --git a/PyEmb.py b/PyEmb.py
index a8f01248..80b9a8a5 100644
--- a/PyEmb.py
+++ b/PyEmb.py
@@ -5,6 +5,14 @@ import math
 import sys
 from copy import deepcopy
 
+try:
+    from functools import lru_cache
+except ImportError:
+    from backports.functools_lru_cache import lru_cache
+
+# simplify use of lru_cache decorator
+def cache(*args, **kwargs):
+    return lru_cache(maxsize=None)(*args, **kwargs)
 
 class Point: