diff --git a/lib/py/src/protocol/TBinaryProtocol.py b/lib/py/src/protocol/TBinaryProtocol.py
index 860f461..25f3218 100644
--- a/lib/py/src/protocol/TBinaryProtocol.py
+++ b/lib/py/src/protocol/TBinaryProtocol.py
@@ -73,6 +73,10 @@
     buff = pack("!q", i64)
     otrans.write(buff)
 
+  def writeDouble(self, otrans, dub):
+    buff = pack("!d", dub)
+    otrans.write(buff)
+
   def writeString(self, otrans, str):
     self.writeI32(otrans, len(str))
     otrans.write(str)
@@ -153,6 +157,11 @@
     val, = unpack('!q', buff)
     return val
 
+  def readDouble(self, itrans):
+    buff = itrans.readAll(8)
+    val, = unpack('!d', buff)
+    return val
+
   def readString(self, itrans):
     len = self.readI32(itrans)
     str = itrans.readAll(len)
diff --git a/lib/py/src/protocol/TProtocol.py b/lib/py/src/protocol/TProtocol.py
index 3105e25..0b480d3 100644
--- a/lib/py/src/protocol/TProtocol.py
+++ b/lib/py/src/protocol/TProtocol.py
@@ -3,7 +3,8 @@
   VOID   = 1
   BOOL   = 2
   BYTE   = 3
-  I08    = 4
+  I08    = 3
+  DOUBLE = 4
   I16    = 6
   I32    = 8
   I64    = 10
@@ -78,6 +79,9 @@
   def writeI64(self, otrans, i64):
     pass
 
+  def writeDouble(self, otrans, dub):
+    pass
+
   def writeString(self, otrans, str):
     pass
 
@@ -132,6 +136,9 @@
   def readI64(self, itrans):
     pass
 
+  def readDouble(self, itrans):
+    pass
+
   def readString(self, itrans):
     pass
 
@@ -148,6 +155,8 @@
       self.readI32(itrans)
     elif type == TType.I64:
       self.readI64(itrans)
+    elif type == TType.DOUBLE:
+      self.readDouble(itrans)
     elif type == TType.STRING:
       self.readString(itrans)
     elif type == TType.STRUCT: