len_decode docstring

diff --git a/pyderasn.py b/pyderasn.py
index e65cdc17193b7617cc0cf8f738e4c4ba11906f7b..59fc7abc99376c3ff91fd6a684d1aedd729a13d2 100755 (executable)
--- a/pyderasn.py
+++ b/pyderasn.py
@@ -803,6 +803,11 @@ def len_encode(l):
 
 
 def len_decode(data):
+    """Decode length
+
+    :returns: (decoded length, length's length, remaining data)
+    :raises LenIndefForm: if indefinite form encoding is met
+    """
     if len(data) == 0:
         raise NotEnoughData("no data at all")
     first_octet = byte2int(data)