diff --git a/src/connector/python/linux/python2/taos/subscription.py b/src/connector/python/linux/python2/taos/subscription.py
index cbba3d59caad96ff2233d6c62b440131b1e12559..2d01395532820c3bd0e068ef7eb3d425eaaa6d78 100644
--- a/src/connector/python/linux/python2/taos/subscription.py
+++ b/src/connector/python/linux/python2/taos/subscription.py
@@ -16,13 +16,13 @@ class TDengineSubscription(object):
         
         result, fields = CTaosInterface.consume(self._sub)
         buffer = [[] for i in range(len(fields))]
-        print(buffer)
         while True:
             block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
             if num_of_fields == 0: break
             for i in range(len(fields)):
                 buffer[i].extend(block[i])
 
+        self.fields = fields
         return list(map(tuple, zip(*buffer)))
 
 
diff --git a/src/connector/python/linux/python3/taos/subscription.py b/src/connector/python/linux/python3/taos/subscription.py
index 3af989a1386d0d6b3d46c4acdc89c3d3fac0ee54..d3cf10d5ada578687689b94454378dd543368e3e 100644
--- a/src/connector/python/linux/python3/taos/subscription.py
+++ b/src/connector/python/linux/python3/taos/subscription.py
@@ -16,13 +16,13 @@ class TDengineSubscription(object):
         
         result, fields = CTaosInterface.consume(self._sub)
         buffer = [[] for i in range(len(fields))]
-        print(buffer)
         while True:
             block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
             if num_of_fields == 0: break
             for i in range(len(fields)):
                 buffer[i].extend(block[i])
 
+        self.fields = fields
         return list(map(tuple, zip(*buffer)))
 
 
diff --git a/src/connector/python/windows/python2/taos/subscription.py b/src/connector/python/windows/python2/taos/subscription.py
index 3af989a1386d0d6b3d46c4acdc89c3d3fac0ee54..d3cf10d5ada578687689b94454378dd543368e3e 100644
--- a/src/connector/python/windows/python2/taos/subscription.py
+++ b/src/connector/python/windows/python2/taos/subscription.py
@@ -16,13 +16,13 @@ class TDengineSubscription(object):
         
         result, fields = CTaosInterface.consume(self._sub)
         buffer = [[] for i in range(len(fields))]
-        print(buffer)
         while True:
             block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
             if num_of_fields == 0: break
             for i in range(len(fields)):
                 buffer[i].extend(block[i])
 
+        self.fields = fields
         return list(map(tuple, zip(*buffer)))
 
 
diff --git a/src/connector/python/windows/python3/taos/subscription.py b/src/connector/python/windows/python3/taos/subscription.py
index 3af989a1386d0d6b3d46c4acdc89c3d3fac0ee54..d3cf10d5ada578687689b94454378dd543368e3e 100644
--- a/src/connector/python/windows/python3/taos/subscription.py
+++ b/src/connector/python/windows/python3/taos/subscription.py
@@ -16,13 +16,13 @@ class TDengineSubscription(object):
         
         result, fields = CTaosInterface.consume(self._sub)
         buffer = [[] for i in range(len(fields))]
-        print(buffer)
         while True:
             block, num_of_fields = CTaosInterface.fetchBlock(result, fields)
             if num_of_fields == 0: break
             for i in range(len(fields)):
                 buffer[i].extend(block[i])
 
+        self.fields = fields
         return list(map(tuple, zip(*buffer)))