missing imports, non-existing variables as suggested by linter

1 files changed, 1 insertions, 4 deletions

diff --git a/pysnmp/carrier/asynsock/dgram/base.py b/pysnmp/carrier/asynsock/dgram/base.py
index 9c0f31f..a454c01 100644
--- a/pysnmp/carrier/asynsock/dgram/base.py
+++ b/pysnmp/carrier/asynsock/dgram/base.py
@@ -12,12 +12,9 @@ sockErrors = { # Ignore these socket errors
     errno.EAGAIN: 0,
     errno.EWOULDBLOCK: 0
     }
-try:
+if 'EBADFD' in errno:
     # bad FD may happen upon FD closure on n-1 select() event
     sockErrors[errno.EBADFD] = 1
-except AttributeError:
-    # Windows sockets do not have EBADFD
-    pass
 
 class DgramSocketTransport(AbstractSocketTransport):
     sockType = socket.SOCK_DGRAM