diff --git a/Lib/functools.py b/Lib/functools.py
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -121,12 +121,15 @@
 
 _CacheInfo = namedtuple("CacheInfo", "hits misses maxsize currsize")
 
-def lru_cache(maxsize=100):
+def lru_cache(maxsize=100, typed=False):
     """Least-recently-used cache decorator.
 
     If *maxsize* is set to None, the LRU features are disabled and the cache
     can grow without bound.
 
+    If *typed* is True, arguments of different types will be cached separately.
+    For example, f(3.0) and f(3) will be treated as distinct calls.
+
     Arguments to the cached function must be hashable.
 
     View the cache statistics named tuple (hits, misses, maxsize, currsize) with
@@ -157,6 +160,8 @@
                 key = args
                 if kwds:
                     key += kwd_mark + tuple(sorted(kwds.items()))
+                if typed:
+                    key += tuple(map(type, key))
                 try:
                     result = cache[key]
                     hits += 1
@@ -178,6 +183,8 @@
                 key = args
                 if kwds:
                     key += kwd_mark + tuple(sorted(kwds.items()))
+                if typed:
+                    key += tuple(map(type, key))
                 with lock:
                     try:
                         result = cache[key]