add __slots__ to BlobInfo, StreamDescriptor, and KademliaPeer

lbrynet/blob/blob_info.py

@@ -2,6 +2,13 @@ import typing
 
 
 class BlobInfo:
+    __slots__ = [
+        'blob_hash',
+        'blob_num',
+        'length',
+        'iv',
+    ]
+
     def __init__(self, blob_num: int, length: int, iv: str, blob_hash: typing.Optional[str] = None):
         self.blob_hash = blob_hash
         self.blob_num = blob_num

lbrynet/dht/peer.py

@@ -135,6 +135,15 @@ class PeerManager:
 
 
 class KademliaPeer:
+    __slots__ = [
+        'loop',
+        '_node_id',
+        'address',
+        'udp_port',
+        'tcp_port',
+        'protocol_version',
+    ]
+
     def __init__(self, loop: asyncio.BaseEventLoop, address: str, node_id: typing.Optional[bytes] = None,
                  udp_port: typing.Optional[int] = None, tcp_port: typing.Optional[int] = None):
         if node_id is not None:

lbrynet/stream/descriptor.py

@@ -47,6 +47,17 @@ def file_reader(file_path: str):
 
 
 class StreamDescriptor:
+    __slots__ = [
+        'loop',
+        'blob_dir',
+        'stream_name',
+        'key',
+        'suggested_file_name',
+        'blobs',
+        'stream_hash',
+        'sd_hash'
+    ]
+
     def __init__(self, loop: asyncio.BaseEventLoop, blob_dir: str, stream_name: str, key: str,
                  suggested_file_name: str, blobs: typing.List[BlobInfo], stream_hash: typing.Optional[str] = None,
                  sd_hash: typing.Optional[str] = None):