Add warning when hiredis not installed. Recommend installation.
@@ -71,6 +71,9 @@ if HIREDIS_AVAILABLE:
# only use byte buffer if hiredis supports it
if not HIREDIS_SUPPORTS_BYTE_BUFFER:
HIREDIS_USE_BYTE_BUFFER = False
+else:
+ msg = "redis-py works best with hiredis. Please consider installing"
+ warnings.warn(msg)
SYM_STAR = b'*'
SYM_DOLLAR = b'$'
