diff --git a/build.sla b/build.sla
index c6189cc..8d7fedb 100644
--- a/build.sla
+++ b/build.sla
@@ -11,9 +11,16 @@ PROG="scriptform"
 test () {
     # Run tests
     ROOTDIR="$(pwd)"
+
+    # Unit / integration tests
     cd test && python ./test.py
+
+    # Code quality linting (flake8)
     cd $ROOTDIR
-    cd src && flake8 *.py || true
+    # E402 == module level import not at top of file
+    #cd src && flake8 --extend-ignore=E402 *.py || true
+
+    # Code quality linting (pylint)
     cd $ROOTDIR
     cd src && pylint --reports=n -dR -d star-args -d no-member *.py || true
     cd $ROOTDIR
diff --git a/src/daemon.py b/src/daemon.py
index 7668fee..e2264e6 100644
--- a/src/daemon.py
+++ b/src/daemon.py
@@ -161,7 +161,7 @@ class Daemon(object):  # pragma: no cover
 
         return pid
 
-    def _cleanup(self, sig=None, frame=None):
+    def _cleanup(self, sig=None):
         """
         Remove pid files and call registered shutodnw callbacks.
         """
diff --git a/src/formdefinition.py b/src/formdefinition.py
index 4c1cf65..5e7e0d8 100644
--- a/src/formdefinition.py
+++ b/src/formdefinition.py
@@ -100,7 +100,7 @@ class FormDefinition(object):
         field_def = self.get_field_def(field_name)
 
         field_type = field_def['type']
-        validate_cb = getattr(self, 'validate_{0}'.format(field_type), None)
+        validate_cb = getattr(self, 'validate_{0}'.format(field_type))
         return validate_cb(field_def, form_values)
 
     def validate_string(self, field_def, form_values):
diff --git a/src/formrender.py b/src/formrender.py
index 911e282..817a060 100644
--- a/src/formrender.py
+++ b/src/formrender.py
@@ -101,8 +101,8 @@ class FormRender(object):
         """
         params = self.cast_params(kwargs)
         method_name = 'r_field_{0}'.format(field_type)
-        method = getattr(self, method_name, None)
-        field = method(**params)
+        method = getattr(self, method_name)
+        field = method(**params)  # pylint: disable=not-callable
 
         if 'required' in kwargs and kwargs['required'] is True:
             return HTML_REQUIRED.format(field)
diff --git a/src/scriptform.py b/src/scriptform.py
index d353148..5d997bb 100755
--- a/src/scriptform.py
+++ b/src/scriptform.py
@@ -6,9 +6,6 @@ Main ScriptForm program
 """
 
 import sys
-if hasattr(sys, 'dont_write_bytecode'):
-    sys.dont_write_bytecode = True
-
 import optparse
 import os
 import json
@@ -17,6 +14,10 @@ import thread
 import hashlib
 import socket
 
+if hasattr(sys, 'dont_write_bytecode'):
+    sys.dont_write_bytecode = True
+
+# pylint: disable=wrong-import-position
 from daemon import Daemon
 from formdefinition import FormDefinition
 from formconfig import FormConfig
diff --git a/src/webserver.py b/src/webserver.py
index 276754a..7880b3b 100644
--- a/src/webserver.py
+++ b/src/webserver.py
@@ -4,7 +4,6 @@ Basic web server / framework.
 
 from SocketServer import ThreadingMixIn
 import BaseHTTPServer
-from BaseHTTPServer import BaseHTTPRequestHandler
 import urlparse
 import cgi
 
@@ -30,25 +29,25 @@ class ThreadedHTTPServer(ThreadingMixIn, BaseHTTPServer.HTTPServer):
     pass
 
 
-class RequestHandler(BaseHTTPRequestHandler):
+class RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
     """
     Basic web server request handler. Handles GET and POST requests. You should
     inherit from this class and implement h_ methods for handling requests.
     If no path is set, it dispatches to the 'index' or 'default' method.
     """
-    def log_message(self, fmt, *args):
+    def log_message(self, fmt, *args):  # pylint: disable=arguments-differ
         """Overrides BaseHTTPRequestHandler which logs to the console. We log
         to our log file instead"""
         fmt = "{0} {1}"
         self.scriptform.log.info(fmt.format(self.address_string(), args))
 
-    def do_GET(self):
+    def do_GET(self):  # pylint: disable=invalid-name
         """
         Handle a GET request.
         """
         self._call(*self._parse(self.path.lstrip('/')))
 
-    def do_POST(self):
+    def do_POST(self):  # pylint: disable=invalid-name
         """
         Handle a POST request.
         """