unused variables, imports; wrong indentation; undefined prototype attribues

all the things that bothers linter

1 files changed, 4 insertions, 1 deletions

diff --git a/pysnmp/entity/rfc3413/oneliner/target.py b/pysnmp/entity/rfc3413/oneliner/target.py
index 3c7bbf3..04d268a 100644
--- a/pysnmp/entity/rfc3413/oneliner/target.py
+++ b/pysnmp/entity/rfc3413/oneliner/target.py
@@ -4,7 +4,8 @@ from pysnmp import error
 from pyasn1.compat.octets import null
 
 class _AbstractTransportTarget:
-    transportDomain = protoTransport = None
+    transportDomain = None
+    protoTransport = NotImplementedError
     def __init__(self, transportAddr, timeout=1, retries=5, tagList=null):
         self.transportAddr = self._resolveAddr(transportAddr)
         self.timeout = timeout
@@ -24,6 +25,8 @@ class _AbstractTransportTarget:
         self.transport = self.protoTransport().openClientMode()
         return self.transport
 
+    def _resolveAddr(self, transportAddr): raise NotImplementedError()
+
 class UdpTransportTarget(_AbstractTransportTarget):
     transportDomain = udp.domainName
     protoTransport = udp.UdpSocketTransport