Fix linter error W503 and ignore E402, E123

* E402 module level import not at top of file to set scapy loglevel so that the tcpdump warning is not printed
* E123 closing bracket does not match indentation of opening bracket's line for the objects in the test Please enter the commit message for your changes. Lines starting

dhcpcanon/dhcpcaputils.py

@@ -18,26 +18,26 @@
 
 def isoffer(packet):
     """."""
-    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) == 'offer'
-                           or packet[DHCP].options[0][1] == "offer"):
+    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) ==
+                           'offer' or packet[DHCP].options[0][1] == "offer"):
         logger.debug('Packet is Offer.')
         return True
     return False
 
 
 def isnak(packet):
     """."""
-    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) == 'nak'
-                           or packet[DHCP].options[0][1] == 'nak'):
+    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) ==
+                           'nak' or packet[DHCP].options[0][1] == 'nak'):
         logger.debug('Packet is NAK.')
         return True
     return False
 
 
 def isack(packet):
     """."""
-    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) == 'ack'
-                           or packet[DHCP].options[0][1] == 'ack'):
+    if DHCP in packet and (DHCPTypes.get(packet[DHCP].options[0][1]) ==
+                           'ack' or packet[DHCP].options[0][1] == 'ack'):
         logger.debug('Packet is ACK.')
         return True
     return False

tox.ini

@@ -15,7 +15,7 @@ skip_install = True
 deps =
     flake8
 commands =
-    flake8 --max-line-length 79 dhcpcanon scripts tests
+    flake8 --max-line-length 79 --ignore=E402,E123 dhcpcanon scripts tests
 
 [testenv:stats]
 skip_install = True