Fix linting issues'

libp2p/security/security_multistream.py

@@ -1,9 +1,9 @@
-import asyncio
-
-from abc import ABC, abstractmethod
+from abc import ABC
 from libp2p.protocol_muxer.multiselect_client import MultiselectClient
 from libp2p.protocol_muxer.multiselect import Multiselect
 
+# pylint: disable=W0105
+
 """
 Represents a secured connection object, which includes a connection and details about the security
 involved in the secured connection
@@ -13,7 +13,7 @@ Relevant go repo: https://github.com/libp2p/go-conn-security/blob/master/interfa
 class SecurityMultistream(ABC):
 
     def __init__(self):
-        # Map protocol to secure transport 
+        # Map protocol to secure transport
         self.transports = {}
 
         # Create multiselect
@@ -31,7 +31,7 @@ class SecurityMultistream(ABC):
         # we only care about selecting the protocol, not any handler function
         self.multiselect.add_handler(protocol, None)
 
-    
+
     async def secure_inbound(self, conn):
         """
         Secure the connection, either locally or by communicating with opposing node via conn,
@@ -66,19 +66,21 @@ class SecurityMultistream(ABC):
 
     async def select_transport(self, conn, initiator):
         """
-        Select a transport that both us and the node on the 
+        Select a transport that both us and the node on the
         other end of conn support and agree on
         :param conn: conn to choose a transport over
         :param initiator: true if we are the initiator, false otherwise
         :return: selected secure transport
         """
-        # TODO: Is conn acceptable to multiselect/multiselect_client instead of stream? In go repo,
-        # they pass in a raw conn (https://raw.githubusercontent.com/libp2p/go-conn-security-multistream/master/ssms.go)
-        
+        # TODO: Is conn acceptable to multiselect/multiselect_client
+        # instead of stream? In go repo, they pass in a raw conn
+        # (https://raw.githubusercontent.com/libp2p/go-conn-security-multistream/master/ssms.go)
+
         protocol = None
         if initiator:
             # Select protocol if initiator
-            protocol = await self.multiselect_client.select_one_of(list(self.transports.keys()), conn)
+            protocol = \
+                await self.multiselect_client.select_one_of(list(self.transports.keys()), conn)
         else:
             # Select protocol if non-initiator
             protocol, _ = await self.multiselect.negotiate(conn)