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-rw-r--r--synapse/storage/_base.py8
-rw-r--r--synapse/storage/data_stores/main/keys.py10
-rw-r--r--synapse/storage/data_stores/main/transactions.py9
3 files changed, 3 insertions, 24 deletions
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 59073c0a42..bfce541ca7 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -19,9 +19,6 @@ import random
 from abc import ABCMeta
 from typing import Any, Optional
 
-from six import PY2
-from six.moves import builtins
-
 from canonicaljson import json
 
 from synapse.storage.database import LoggingTransaction  # noqa: F401
@@ -103,11 +100,6 @@ def db_to_json(db_content):
     if isinstance(db_content, memoryview):
         db_content = db_content.tobytes()
 
-    # psycopg2 on Python 2 returns buffer objects, which we need to cast to
-    # bytes to decode
-    if PY2 and isinstance(db_content, builtins.buffer):
-        db_content = bytes(db_content)
-
     # Decode it to a Unicode string before feeding it to json.loads, so we
     # consistenty get a Unicode-containing object out.
     if isinstance(db_content, (bytes, bytearray)):
diff --git a/synapse/storage/data_stores/main/keys.py b/synapse/storage/data_stores/main/keys.py
index ba89c68c9f..4e1642a27a 100644
--- a/synapse/storage/data_stores/main/keys.py
+++ b/synapse/storage/data_stores/main/keys.py
@@ -17,8 +17,6 @@
 import itertools
 import logging
 
-import six
-
 from signedjson.key import decode_verify_key_bytes
 
 from synapse.storage._base import SQLBaseStore
@@ -28,12 +26,8 @@ from synapse.util.iterutils import batch_iter
 
 logger = logging.getLogger(__name__)
 
-# py2 sqlite has buffer hardcoded as only binary type, so we must use it,
-# despite being deprecated and removed in favor of memoryview
-if six.PY2:
-    db_binary_type = six.moves.builtins.buffer
-else:
-    db_binary_type = memoryview
+
+db_binary_type = memoryview
 
 
 class KeyStore(SQLBaseStore):
diff --git a/synapse/storage/data_stores/main/transactions.py b/synapse/storage/data_stores/main/transactions.py
index 5b07c2fbc0..a9bf457939 100644
--- a/synapse/storage/data_stores/main/transactions.py
+++ b/synapse/storage/data_stores/main/transactions.py
@@ -16,8 +16,6 @@
 import logging
 from collections import namedtuple
 
-import six
-
 from canonicaljson import encode_canonical_json
 
 from twisted.internet import defer
@@ -27,12 +25,7 @@ from synapse.storage._base import SQLBaseStore, db_to_json
 from synapse.storage.database import Database
 from synapse.util.caches.expiringcache import ExpiringCache
 
-# py2 sqlite has buffer hardcoded as only binary type, so we must use it,
-# despite being deprecated and removed in favor of memoryview
-if six.PY2:
-    db_binary_type = six.moves.builtins.buffer
-else:
-    db_binary_type = memoryview
+db_binary_type = memoryview
 
 logger = logging.getLogger(__name__)