diff --git a/.travis.yml b/.travis.yml
index 94bfa0dab..33abc8425 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ python:
   - "3.5"
 install:
   - pip install -r requirements.txt
-  - pip install pep8
+  - pip install pycodestyle
 before_script:
   - psql --version
   - psql -U postgres -c 'SELECT version();'
diff --git a/netbox/dcim/forms.py b/netbox/dcim/forms.py
index da8dc0457..593bef113 100644
--- a/netbox/dcim/forms.py
+++ b/netbox/dcim/forms.py
@@ -34,7 +34,7 @@ from .models import (
     RackRole, Region, Site, VirtualChassis
 )
 
-DEVICE_BY_PK_RE = '{\d+\}'
+DEVICE_BY_PK_RE = r'{\d+\}'
 
 INTERFACE_MODE_HELP_TEXT = """
 Access: One untagged VLAN<br />
diff --git a/netbox/dcim/models.py b/netbox/dcim/models.py
index 95e9299b8..14c9ef393 100644
--- a/netbox/dcim/models.py
+++ b/netbox/dcim/models.py
@@ -1211,8 +1211,8 @@ class ConsoleServerPortManager(models.Manager):
     def get_queryset(self):
         # Pad any trailing digits to effect natural sorting
         return super(ConsoleServerPortManager, self).get_queryset().extra(select={
-            'name_padded': "CONCAT(REGEXP_REPLACE(dcim_consoleserverport.name, '\d+$', ''), "
-                           "LPAD(SUBSTRING(dcim_consoleserverport.name FROM '\d+$'), 8, '0'))",
+            'name_padded': r"CONCAT(REGEXP_REPLACE(dcim_consoleserverport.name, '\d+$', ''), "
+                           r"LPAD(SUBSTRING(dcim_consoleserverport.name FROM '\d+$'), 8, '0'))",
         }).order_by('device', 'name_padded')
 
 
@@ -1293,8 +1293,8 @@ class PowerOutletManager(models.Manager):
     def get_queryset(self):
         # Pad any trailing digits to effect natural sorting
         return super(PowerOutletManager, self).get_queryset().extra(select={
-            'name_padded': "CONCAT(REGEXP_REPLACE(dcim_poweroutlet.name, '\d+$', ''), "
-                           "LPAD(SUBSTRING(dcim_poweroutlet.name FROM '\d+$'), 8, '0'))",
+            'name_padded': r"CONCAT(REGEXP_REPLACE(dcim_poweroutlet.name, '\d+$', ''), "
+                           r"LPAD(SUBSTRING(dcim_poweroutlet.name FROM '\d+$'), 8, '0'))",
         }).order_by('device', 'name_padded')
 
 
diff --git a/netbox/extras/api/views.py b/netbox/extras/api/views.py
index 252c2d12c..f39629fa0 100644
--- a/netbox/extras/api/views.py
+++ b/netbox/extras/api/views.py
@@ -99,7 +99,7 @@ class TopologyMapViewSet(ModelViewSet):
 
         try:
             data = tmap.render(img_format=img_format)
-        except:
+        except Exception:
             return HttpResponse(
                 "There was an error generating the requested graph. Ensure that the GraphViz executables have been "
                 "installed correctly."
diff --git a/netbox/extras/forms.py b/netbox/extras/forms.py
index a923ae596..55f8435d6 100644
--- a/netbox/extras/forms.py
+++ b/netbox/extras/forms.py
@@ -4,6 +4,7 @@ from collections import OrderedDict
 
 from django import forms
 from django.contrib.contenttypes.models import ContentType
+from django.core.exceptions import ObjectDoesNotExist
 
 from utilities.forms import BootstrapMixin, BulkEditForm, LaxURLField
 from .constants import CF_FILTER_DISABLED, CF_TYPE_BOOLEAN, CF_TYPE_DATE, CF_TYPE_INTEGER, CF_TYPE_SELECT, CF_TYPE_URL
@@ -53,7 +54,14 @@ def get_custom_fields_for_model(content_type, filterable_only=False, bulk_edit=F
             choices = [(cfc.pk, cfc) for cfc in cf.choices.all()]
             if not cf.required or bulk_edit or filterable_only:
                 choices = [(None, '---------')] + choices
-            field = forms.TypedChoiceField(choices=choices, coerce=int, required=cf.required)
+            # Check for a default choice
+            default_choice = None
+            if initial:
+                try:
+                    default_choice = cf.choices.get(value=initial).pk
+                except ObjectDoesNotExist:
+                    pass
+            field = forms.TypedChoiceField(choices=choices, coerce=int, required=cf.required, initial=default_choice)
 
         # URL
         elif cf.type == CF_TYPE_URL:
diff --git a/netbox/extras/migrations/0007_unicode_literals.py b/netbox/extras/migrations/0007_unicode_literals.py
index c9a624510..cda07583f 100644
--- a/netbox/extras/migrations/0007_unicode_literals.py
+++ b/netbox/extras/migrations/0007_unicode_literals.py
@@ -16,7 +16,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='customfield',
             name='default',
-            field=models.CharField(blank=True, help_text='Default value for the field. Use "true" or "false" for booleans. N/A for selection fields.', max_length=100),
+            field=models.CharField(blank=True, help_text='Default value for the field. Use "true" or "false" for booleans.', max_length=100),
         ),
         migrations.AlterField(
             model_name='customfield',
diff --git a/netbox/extras/migrations/0008_reports.py b/netbox/extras/migrations/0008_reports.py
index 7f3eccc32..fbfde2cba 100644
--- a/netbox/extras/migrations/0008_reports.py
+++ b/netbox/extras/migrations/0008_reports.py
@@ -19,7 +19,7 @@ def verify_postgresql_version(apps, schema_editor):
         with connection.cursor() as cursor:
             cursor.execute("SELECT VERSION()")
             row = cursor.fetchone()
-            pg_version = re.match('^PostgreSQL (\d+\.\d+(\.\d+)?)', row[0]).group(1)
+            pg_version = re.match(r'^PostgreSQL (\d+\.\d+(\.\d+)?)', row[0]).group(1)
             if StrictVersion(pg_version) < StrictVersion('9.4.0'):
                 raise Exception("PostgreSQL 9.4.0 or higher is required ({} found). Upgrade PostgreSQL and then run migrations again.".format(pg_version))
 
diff --git a/netbox/extras/models.py b/netbox/extras/models.py
index 75945adcd..cb68f0e0d 100644
--- a/netbox/extras/models.py
+++ b/netbox/extras/models.py
@@ -91,7 +91,7 @@ class CustomField(models.Model):
     default = models.CharField(
         max_length=100,
         blank=True,
-        help_text='Default value for the field. Use "true" or "false" for booleans. N/A for selection fields.'
+        help_text='Default value for the field. Use "true" or "false" for booleans.'
     )
     weight = models.PositiveSmallIntegerField(
         default=100,
diff --git a/netbox/extras/rpc.py b/netbox/extras/rpc.py
index 2a547ca45..552f592c7 100644
--- a/netbox/extras/rpc.py
+++ b/netbox/extras/rpc.py
@@ -163,8 +163,8 @@ class IOSSSH(SSHClient):
 
             sh_ver = self._send('show version').split('\r\n')
             return {
-                'serial': parse(sh_ver, 'Processor board ID ([^\s]+)'),
-                'description': parse(sh_ver, 'cisco ([^\s]+)')
+                'serial': parse(sh_ver, r'Processor board ID ([^\s]+)'),
+                'description': parse(sh_ver, r'cisco ([^\s]+)')
             }
 
         def items(chassis_serial=None):
@@ -172,9 +172,9 @@ class IOSSSH(SSHClient):
             for i in cmd:
                 i_fmt = i.replace('\r\n', ' ')
                 try:
-                    m_name = re.search('NAME: "([^"]+)"', i_fmt).group(1)
-                    m_pid = re.search('PID: ([^\s]+)', i_fmt).group(1)
-                    m_serial = re.search('SN: ([^\s]+)', i_fmt).group(1)
+                    m_name = re.search(r'NAME: "([^"]+)"', i_fmt).group(1)
+                    m_pid = re.search(r'PID: ([^\s]+)', i_fmt).group(1)
+                    m_serial = re.search(r'SN: ([^\s]+)', i_fmt).group(1)
                     # Omit built-in items and those with no PID
                     if m_serial != chassis_serial and m_pid.lower() != 'unspecified':
                         yield {
@@ -208,7 +208,7 @@ class OpengearSSH(SSHClient):
         try:
             stdin, stdout, stderr = self.ssh.exec_command("showserial")
             serial = stdout.readlines()[0].strip()
-        except:
+        except Exception:
             raise RuntimeError("Failed to glean chassis serial from device.")
         # Older models don't provide serial info
         if serial == "No serial number information available":
@@ -217,7 +217,7 @@ class OpengearSSH(SSHClient):
         try:
             stdin, stdout, stderr = self.ssh.exec_command("config -g config.system.model")
             description = stdout.readlines()[0].split(' ', 1)[1].strip()
-        except:
+        except Exception:
             raise RuntimeError("Failed to glean chassis description from device.")
 
         return {
diff --git a/netbox/netbox/settings.py b/netbox/netbox/settings.py
index 81ef511f9..f3555b5e7 100644
--- a/netbox/netbox/settings.py
+++ b/netbox/netbox/settings.py
@@ -275,7 +275,8 @@ SWAGGER_SETTINGS = {
             'name': 'Authorization',
             'in': 'header',
         }
-    }
+    },
+    'VALIDATOR_URL': None,
 }
 
 
@@ -288,5 +289,5 @@ INTERNAL_IPS = (
 
 try:
     HOSTNAME = socket.gethostname()
-except:
+except Exception:
     HOSTNAME = 'localhost'
diff --git a/netbox/netbox/urls.py b/netbox/netbox/urls.py
index 5f7b26a71..4907555ed 100644
--- a/netbox/netbox/urls.py
+++ b/netbox/netbox/urls.py
@@ -52,9 +52,9 @@ _patterns = [
     url(r'^api/secrets/', include('secrets.api.urls')),
     url(r'^api/tenancy/', include('tenancy.api.urls')),
     url(r'^api/virtualization/', include('virtualization.api.urls')),
-    url(r'^api/docs/$', schema_view.with_ui('swagger', cache_timeout=None), name='api_docs'),
-    url(r'^api/redoc/$', schema_view.with_ui('redoc', cache_timeout=None), name='api_redocs'),
-    url(r'^api/swagger(?P<format>.json|.yaml)$', schema_view.without_ui(cache_timeout=None), name='schema_swagger'),
+    url(r'^api/docs/$', schema_view.with_ui('swagger'), name='api_docs'),
+    url(r'^api/redoc/$', schema_view.with_ui('redoc'), name='api_redocs'),
+    url(r'^api/swagger(?P<format>.json|.yaml)$', schema_view.without_ui(), name='schema_swagger'),
 
     # Serving static media in Django to pipe it through LoginRequiredMiddleware
     url(r'^media/(?P<path>.*)$', serve, {'document_root': settings.MEDIA_ROOT}),
diff --git a/netbox/secrets/forms.py b/netbox/secrets/forms.py
index 8f8107805..8e7fa3b16 100644
--- a/netbox/secrets/forms.py
+++ b/netbox/secrets/forms.py
@@ -26,7 +26,7 @@ def validate_rsa_key(key, is_secret=True):
         raise forms.ValidationError("This looks like a private key. Please provide your public RSA key.")
     try:
         PKCS1_OAEP.new(key)
-    except:
+    except Exception:
         raise forms.ValidationError("Error validating RSA key. Please ensure that your key supports PKCS#1 OAEP.")
 
 
diff --git a/netbox/secrets/models.py b/netbox/secrets/models.py
index e1f367d03..4bd644564 100644
--- a/netbox/secrets/models.py
+++ b/netbox/secrets/models.py
@@ -87,7 +87,7 @@ class UserKey(CreatedUpdatedModel):
                 raise ValidationError({
                     'public_key': "Invalid RSA key format."
                 })
-            except:
+            except Exception:
                 raise ValidationError("Something went wrong while trying to save your key. Please ensure that you're "
                                       "uploading a valid RSA public key in PEM format (no SSH/PGP).")
 
diff --git a/netbox/utilities/forms.py b/netbox/utilities/forms.py
index 69b102f5c..1cea0b0da 100644
--- a/netbox/utilities/forms.py
+++ b/netbox/utilities/forms.py
@@ -38,10 +38,10 @@ COLOR_CHOICES = (
     ('607d8b', 'Dark grey'),
     ('111111', 'Black'),
 )
-NUMERIC_EXPANSION_PATTERN = '\[((?:\d+[?:,-])+\d+)\]'
-ALPHANUMERIC_EXPANSION_PATTERN = '\[((?:[a-zA-Z0-9]+[?:,-])+[a-zA-Z0-9]+)\]'
-IP4_EXPANSION_PATTERN = '\[((?:[0-9]{1,3}[?:,-])+[0-9]{1,3})\]'
-IP6_EXPANSION_PATTERN = '\[((?:[0-9a-f]{1,4}[?:,-])+[0-9a-f]{1,4})\]'
+NUMERIC_EXPANSION_PATTERN = r'\[((?:\d+[?:,-])+\d+)\]'
+ALPHANUMERIC_EXPANSION_PATTERN = r'\[((?:[a-zA-Z0-9]+[?:,-])+[a-zA-Z0-9]+)\]'
+IP4_EXPANSION_PATTERN = r'\[((?:[0-9]{1,3}[?:,-])+[0-9]{1,3})\]'
+IP6_EXPANSION_PATTERN = r'\[((?:[0-9a-f]{1,4}[?:,-])+[0-9a-f]{1,4})\]'
 
 
 def parse_numeric_range(string, base=10):
@@ -407,7 +407,7 @@ class FlexibleModelChoiceField(forms.ModelChoiceField):
         try:
             if not self.to_field_name:
                 key = 'pk'
-            elif re.match('^\{\d+\}$', value):
+            elif re.match(r'^\{\d+\}$', value):
                 key = 'pk'
                 value = value.strip('{}')
             else:
diff --git a/netbox/utilities/managers.py b/netbox/utilities/managers.py
index dc882d462..33b4356d4 100644
--- a/netbox/utilities/managers.py
+++ b/netbox/utilities/managers.py
@@ -23,9 +23,9 @@ class NaturalOrderByManager(Manager):
         id3 = '_{}_{}3'.format(db_table, primary_field)
 
         queryset = super(NaturalOrderByManager, self).get_queryset().extra(select={
-            id1: "CAST(SUBSTRING({}.{} FROM '^(\d{{1,9}})') AS integer)".format(db_table, primary_field),
-            id2: "SUBSTRING({}.{} FROM '^\d*(.*?)\d*$')".format(db_table, primary_field),
-            id3: "CAST(SUBSTRING({}.{} FROM '(\d{{1,9}})$') AS integer)".format(db_table, primary_field),
+            id1: r"CAST(SUBSTRING({}.{} FROM '^(\d{{1,9}})') AS integer)".format(db_table, primary_field),
+            id2: r"SUBSTRING({}.{} FROM '^\d*(.*?)\d*$')".format(db_table, primary_field),
+            id3: r"CAST(SUBSTRING({}.{} FROM '(\d{{1,9}})$') AS integer)".format(db_table, primary_field),
         })
         ordering = fields[0:-1] + (id1, id2, id3)
 
diff --git a/netbox/utilities/validators.py b/netbox/utilities/validators.py
index 8eb990486..dcdb9bc6d 100644
--- a/netbox/utilities/validators.py
+++ b/netbox/utilities/validators.py
@@ -15,7 +15,7 @@ class EnhancedURLValidator(URLValidator):
         A fake URL list which "contains" all scheme names abiding by the syntax defined in RFC 3986 section 3.1
         """
         def __contains__(self, item):
-            if not item or not re.match('^[a-z][0-9a-z+\-.]*$', item.lower()):
+            if not item or not re.match(r'^[a-z][0-9a-z+\-.]*$', item.lower()):
                 return False
             return True
 
diff --git a/scripts/cibuild.sh b/scripts/cibuild.sh
index 4f4fe1ca3..c0a49b5ef 100755
--- a/scripts/cibuild.sh
+++ b/scripts/cibuild.sh
@@ -23,8 +23,11 @@ fi
 
 # Check all python source files for PEP 8 compliance, but explicitly
 # ignore:
+#  - W504: line break after binary operator
 #  - E501: line greater than 80 characters in length
-pep8 --ignore=E501 netbox/
+pycodestyle \
+    --ignore=W504,E501 \
+    netbox/
 RC=$?
 if [[ $RC != 0 ]]; then
 	echo -e "\n$(info) one or more PEP 8 errors detected, failing build."