diff --git a/src/opnsense/scripts/suricata/installRules.py b/src/opnsense/scripts/suricata/installRules.py
index f956be31b..a5d2d4909 100755
--- a/src/opnsense/scripts/suricata/installRules.py
+++ b/src/opnsense/scripts/suricata/installRules.py
@@ -37,9 +37,9 @@ from lib import rule_source_directory
 if __name__ == '__main__':
     RuleCache = lib.rulecache.RuleCache()
 
-    rule_config_fn = ('%s../rules.config'%rule_source_directory)
-    rule_target_dir = ('%s../opnsense.rules'%rule_source_directory)
-    rule_yaml_list = ('%s../installed_rules.yaml'%rule_source_directory)
+    rule_config_fn = ('%s../rules.config' % rule_source_directory)
+    rule_target_dir = ('%s../opnsense.rules' % rule_source_directory)
+    rule_yaml_list = ('%s../installed_rules.yaml' % rule_source_directory)
 
     # parse OPNsense rule config
     rule_updates = {}
@@ -59,9 +59,9 @@ if __name__ == '__main__':
 
     # install ruleset
     all_installed_files = []
-    for filename in RuleCache.listLocal():
+    for filename in RuleCache.list_local():
         output_data = []
-        for rule_info_record in RuleCache.listRules(filename=filename):
+        for rule_info_record in RuleCache.list_rules(filename=filename):
             # default behavior, do not touch rule, only copy to output
             rule = rule_info_record['rule']
             # change rule if in rule rule updates
@@ -75,7 +75,7 @@ if __name__ == '__main__':
                 # generate altered rule
                 if 'enabled' in rule_updates[rule_info_record['metadata']['sid']]:
                     if (rule_updates[rule_info_record['metadata']['sid']]['enabled']) == '0':
-                        rule = ('#%s'%rule[i:])
+                        rule = ('#%s' % rule[i:])
                     else:
                         rule = rule[i:]
 
@@ -83,12 +83,12 @@ if __name__ == '__main__':
 
         # write data to file
         all_installed_files.append(filename.split('/')[-1])
-        open('%s/%s'%(rule_target_dir, filename.split('/')[-1]), 'wb').write('\n'.join(output_data))
+        open('%s/%s' % (rule_target_dir, filename.split('/')[-1]), 'wb').write('\n'.join(output_data))
 
     # flush all written rule filenames into yaml file
-    with open(rule_yaml_list,'wb') as f_out:
+    with open(rule_yaml_list, 'wb') as f_out:
         f_out.write('%YAML 1.1\n')
         f_out.write('---\n')
         f_out.write('rule-files:\n')
         for installed_file in all_installed_files:
-            f_out.write(' - %s\n'%installed_file)
+            f_out.write(' - %s\n' % installed_file)
diff --git a/src/opnsense/scripts/suricata/lib/__init__.py b/src/opnsense/scripts/suricata/lib/__init__.py
index 10de9603a..ba2322a59 100644
--- a/src/opnsense/scripts/suricata/lib/__init__.py
+++ b/src/opnsense/scripts/suricata/lib/__init__.py
@@ -25,5 +25,5 @@
 """
 
 # define paths used by suricata
-rule_source_directory='/usr/local/etc/suricata/rules/'
-suricata_alert_log='/var/log/suricata/eve.json'
+rule_source_directory = '/usr/local/etc/suricata/rules/'
+suricata_alert_log = '/var/log/suricata/eve.json'
diff --git a/src/opnsense/scripts/suricata/lib/downloader.py b/src/opnsense/scripts/suricata/lib/downloader.py
index 6f160fdc6..b8e879dd0 100644
--- a/src/opnsense/scripts/suricata/lib/downloader.py
+++ b/src/opnsense/scripts/suricata/lib/downloader.py
@@ -31,24 +31,25 @@
 import syslog
 import requests
 
+
 class Downloader(object):
     def __init__(self, target_dir):
         self._target_dir = target_dir
 
     def download(self, proto, url):
-        if proto in ('http','https'):
-            frm_url = url.replace('//','/').replace(':/','://')
+        if proto in ('http', 'https'):
+            frm_url = url.replace('//', '/').replace(':/', '://')
             req = requests.get(url=frm_url)
             if req.status_code == 200:
-                target_filename = ('%s/%s'%(self._target_dir, frm_url.split('/')[-1])).replace('//','/')
+                target_filename = ('%s/%s' % (self._target_dir, frm_url.split('/')[-1])).replace('//', '/')
                 try:
-                    open(target_filename,'wb').write(req.text)
+                    open(target_filename, 'wb').write(req.text)
                 except IOError:
-                    syslog.syslog(syslog.LOG_ERR, 'cannot write to %s'%(target_filename))
+                    syslog.syslog(syslog.LOG_ERR, 'cannot write to %s' % target_filename)
                     return None
-                syslog.syslog(syslog.LOG_INFO, 'download completed for %s'%(frm_url))
+                syslog.syslog(syslog.LOG_INFO, 'download completed for %s' % frm_url)
             else:
-                syslog.syslog(syslog.LOG_ERR, 'download failed for %s'%(frm_url))
+                syslog.syslog(syslog.LOG_ERR, 'download failed for %s' % frm_url)
 
     @staticmethod
     def is_supported(proto):
@@ -56,7 +57,7 @@ class Downloader(object):
         :param proto:
         :return:
         """
-        if proto in ['http','https']:
+        if proto in ['http', 'https']:
             return True
         else:
             return False
diff --git a/src/opnsense/scripts/suricata/lib/log.py b/src/opnsense/scripts/suricata/lib/log.py
index d6e4712fd..b5790f03b 100644
--- a/src/opnsense/scripts/suricata/lib/log.py
+++ b/src/opnsense/scripts/suricata/lib/log.py
@@ -26,14 +26,15 @@
 
 import os
 
-def reverse_log_reader(filename, block_size = 8192, start_pos=None):
+
+def reverse_log_reader(filename, block_size=8192, start_pos=None):
     """ read log file in reverse order
     :param filename: filename to parse
     :param block_size: max block size to examine per loop
     :param start_pos: start at position in file (None is end of file)
     :return: generator
     """
-    with open(filename,'rU') as f_in:
+    with open(filename, 'rU') as f_in:
         if start_pos is None:
             f_in.seek(0, os.SEEK_END)
             file_byte_start = f_in.tell()
@@ -42,7 +43,7 @@ def reverse_log_reader(filename, block_size = 8192, start_pos=None):
 
         data = ''
         while True:
-            if file_byte_start-block_size < 0:
+            if file_byte_start - block_size < 0:
                 block_size = file_byte_start
                 file_byte_start = 0
             else:
@@ -59,10 +60,10 @@ def reverse_log_reader(filename, block_size = 8192, start_pos=None):
                 data = data[:eol]
                 eol = data.rfind('\n')
                 # field line and position in file
-                yield {'line':line.strip(),'pos':line_end}
+                yield {'line': line.strip(), 'pos': line_end}
             if file_byte_start == 0 and eol == -1:
                 # flush last line
-                yield {'line':data.strip(),'pos':len(data)}
+                yield {'line': data.strip(), 'pos': len(data)}
 
             if file_byte_start == 0:
                 break
diff --git a/src/opnsense/scripts/suricata/lib/metadata.py b/src/opnsense/scripts/suricata/lib/metadata.py
index 8dca9ea97..005c2bb96 100644
--- a/src/opnsense/scripts/suricata/lib/metadata.py
+++ b/src/opnsense/scripts/suricata/lib/metadata.py
@@ -33,30 +33,31 @@ import syslog
 import glob
 import xml.etree.ElementTree
 
+
 class Metadata(object):
     def __init__(self):
-        self._rules_dir = '%s/../metadata/rules/'%(os.path.dirname(os.path.abspath(__file__)))
+        self._rules_dir = '%s/../metadata/rules/' % (os.path.dirname(os.path.abspath(__file__)))
 
     def list_rules(self):
         """ list all available rules
         :return: generator method returning all known rulefiles
         """
-        for filename in sorted(glob.glob('%s*.xml'%self._rules_dir)):
+        for filename in sorted(glob.glob('%s*.xml' % self._rules_dir)):
             try:
-                ruleXML=xml.etree.ElementTree.fromstring(open(filename).read())
+                rule_xml = xml.etree.ElementTree.fromstring(open(filename).read())
             except xml.etree.ElementTree.ParseError:
                 # unparseable metadata
-                syslog.syslog(syslog.LOG_ERR,'suricata metadata unparsable @ %s'%filename)
+                syslog.syslog(syslog.LOG_ERR, 'suricata metadata unparsable @ %s' % filename)
                 continue
 
-            src_location = ruleXML.find('location')
+            src_location = rule_xml.find('location')
             if src_location is None or 'url' not in src_location.attrib:
-                syslog.syslog(syslog.LOG_ERR,'suricata metadata missing location  @ %s'%filename)
+                syslog.syslog(syslog.LOG_ERR, 'suricata metadata missing location  @ %s' % filename)
             else:
-                if ruleXML.find('files') is None:
-                    syslog.syslog(syslog.LOG_ERR,'suricata metadata missing files  @ %s'%filename)
+                if rule_xml.find('files') is None:
+                    syslog.syslog(syslog.LOG_ERR, 'suricata metadata missing files  @ %s' % filename)
                 else:
-                    for rule_filename in ruleXML.find('files'):
+                    for rule_filename in rule_xml.find('files'):
                         metadata_record = dict()
                         metadata_record['source'] = src_location.attrib
                         metadata_record['filename'] = rule_filename.text.strip()
diff --git a/src/opnsense/scripts/suricata/lib/params.py b/src/opnsense/scripts/suricata/lib/params.py
index 6455f7a0c..42044ca6d 100644
--- a/src/opnsense/scripts/suricata/lib/params.py
+++ b/src/opnsense/scripts/suricata/lib/params.py
@@ -26,7 +26,8 @@
 
 import sys
 
-def updateParams(parameters):
+
+def update_params(parameters):
     """ update predefined parameters with given list from shell (as switches)
         for example /a valA /b valB
         converts to
@@ -35,11 +36,11 @@ def updateParams(parameters):
     :param parameters: parameter dictionary
     :return:
     """
-    cmd=None
+    cmd = None
     for arg in sys.argv[1:]:
         if cmd is None:
-            cmd=arg[1:]
+            cmd = arg[1:]
         else:
             if cmd in parameters and arg.strip() != '':
                 parameters[cmd] = arg.strip()
-            cmd=None
+            cmd = None
diff --git a/src/opnsense/scripts/suricata/lib/rulecache.py b/src/opnsense/scripts/suricata/lib/rulecache.py
index d721da7a7..142582b87 100644
--- a/src/opnsense/scripts/suricata/lib/rulecache.py
+++ b/src/opnsense/scripts/suricata/lib/rulecache.py
@@ -39,50 +39,52 @@ from lib import rule_source_directory
 class RuleCache(object):
     """
     """
+
     def __init__(self):
         # suricata rule settings, source directory and cache json file to use
-        self.cachefile = '%srules.sqlite'%rule_source_directory
-        self._rule_fields = ['sid','msg','classtype','rev','gid','source','enabled','reference']
-        self._rule_defaults = {'classtype':'##none##'}
+        self.cachefile = '%srules.sqlite' % rule_source_directory
+        self._rule_fields = ['sid', 'msg', 'classtype', 'rev', 'gid', 'source', 'enabled', 'reference']
+        self._rule_defaults = {'classtype': '##none##'}
 
-    def listLocal(self):
-        all_rule_files=[]
-        for filename in glob.glob('%s*.rules'%(rule_source_directory)):
+    @staticmethod
+    def list_local():
+        all_rule_files = []
+        for filename in glob.glob('%s*.rules' % rule_source_directory):
             all_rule_files.append(filename)
 
         return all_rule_files
 
-    def listRules(self, filename):
+    def list_rules(self, filename):
         """ generator function to list rule file content including metadata
         :param filename:
         :return:
         """
         data = open(filename)
         for rule in data.read().split('\n'):
-            rule_info_record = {'rule':rule, 'metadata':None}
+            rule_info_record = {'rule': rule, 'metadata': None}
             if rule.find('msg:') != -1:
                 # define basic record
-                record = {'enabled':True, 'source':filename.split('/')[-1]}
-                if rule.strip()[0] =='#':
+                record = {'enabled': True, 'source': filename.split('/')[-1]}
+                if rule.strip()[0] == '#':
                     record['enabled'] = False
 
                 rule_metadata = rule[rule.find('msg:'):-1]
                 for field in rule_metadata.split(';'):
-                    fieldName = field[0:field.find(':')].strip()
-                    fieldContent = field[field.find(':')+1:].strip()
-                    if fieldName in self._rule_fields:
-                        if fieldContent[0] == '"':
-                            content = fieldContent[1:-1]
+                    fieldname = field[0:field.find(':')].strip()
+                    fieldcontent = field[field.find(':') + 1:].strip()
+                    if fieldname in self._rule_fields:
+                        if fieldcontent[0] == '"':
+                            content = fieldcontent[1:-1]
                         else:
-                            content = fieldContent
+                            content = fieldcontent
 
-                        if fieldName in record:
+                        if fieldname in record:
                             # if same field repeats, put items in list
-                            if type(record[fieldName]) != list:
-                                record[fieldName] = [record[fieldName]]
-                            record[fieldName].append(content)
+                            if type(record[fieldname]) != list:
+                                record[fieldname] = [record[fieldname]]
+                            record[fieldname].append(content)
                         else:
-                            record[fieldName] = content
+                            record[fieldname] = content
 
                 for rule_field in self._rule_fields:
                     if rule_field not in record:
@@ -100,13 +102,13 @@ class RuleCache(object):
 
             yield rule_info_record
 
-    def isChanged(self):
+    def is_changed(self):
         """ check if rules on disk are probably different from rules in cache
         :return: boolean
         """
         if os.path.exists(self.cachefile):
             last_mtime = 0
-            all_rule_files = self.listLocal()
+            all_rule_files = self.list_local()
             for filename in all_rule_files:
                 file_mtime = os.stat(filename).st_mtime
                 if file_mtime > last_mtime:
@@ -115,7 +117,7 @@ class RuleCache(object):
             try:
                 db = sqlite3.connect(self.cachefile)
                 cur = db.cursor()
-                cur.execute('select max(timestamp), max(files) from stats')
+                cur.execute('SELECT max(timestamp), max(files) FROM stats')
                 results = cur.fetchall()
                 if last_mtime == results[0][0] and len(all_rule_files) == results[0][1]:
                     return False
@@ -133,37 +135,37 @@ class RuleCache(object):
 
         db = sqlite3.connect(self.cachefile)
         cur = db.cursor()
-        cur.execute('create table stats (timestamp number, files number)')
-        cur.execute("""create table rules (sid number, msg text, classtype text,
-                                           rev integer, gid integer,reference text,
-                                           enabled boolean,source text)""")
+        cur.execute('CREATE TABLE stats (timestamp number, files number)')
+        cur.execute("""CREATE TABLE rules (sid number, msg TEXT, classtype TEXT,
+                                           rev INTEGER, gid INTEGER,reference TEXT,
+                                           enabled BOOLEAN,source TEXT)""")
 
-        last_mtime=0
-        all_rule_files = self.listLocal()
+        last_mtime = 0
+        all_rule_files = self.list_local()
         for filename in all_rule_files:
             file_mtime = os.stat(filename).st_mtime
             if file_mtime > last_mtime:
                 last_mtime = file_mtime
             rules = []
-            for rule_info_record in self.listRules(filename=filename):
+            for rule_info_record in self.list_rules(filename=filename):
                 if rule_info_record['metadata'] is not None:
                     rules.append(rule_info_record['metadata'])
 
             cur.executemany('insert into rules(%(fieldnames)s) '
-                            'values (%(fieldvalues)s)'%{'fieldnames':(','.join(self._rule_fields)),
-                                                        'fieldvalues':':'+(',:'.join(self._rule_fields))}, rules)
-        cur.execute('insert into stats (timestamp,files) values (?,?) ',(last_mtime,len(all_rule_files)))
+                            'values (%(fieldvalues)s)' % {'fieldnames': (','.join(self._rule_fields)),
+                                                          'fieldvalues': ':' + (',:'.join(self._rule_fields))}, rules)
+        cur.execute('INSERT INTO stats (timestamp,files) VALUES (?,?) ', (last_mtime, len(all_rule_files)))
         db.commit()
 
-    def search(self, limit, offset, filter, sort_by):
+    def search(self, limit, offset, filter_txt, sort_by):
         """ search installed rules
         :param limit: limit number of rows
         :param offset: limit offset
-        :param filter: text to search, used format fieldname1,fieldname2/searchphrase include % to match on a part
-        :param sort: order by, list of fields and possible asc/desc parameter
+        :param filter_txt: text to search, used format fieldname1,fieldname2/searchphrase include % to match on a part
+        :param sort_by: order by, list of fields and possible asc/desc parameter
         :return: dict
         """
-        result = {'rows':[]}
+        result = {'rows': []}
         if os.path.exists(self.cachefile):
             db = sqlite3.connect(self.cachefile)
             cur = db.cursor()
@@ -172,7 +174,7 @@ class RuleCache(object):
             sql = 'select * from rules '
             sql_filters = {}
 
-            for filtertag in shlex.split(filter):
+            for filtertag in shlex.split(filter_txt):
                 fieldnames = filtertag.split('/')[0]
                 searchcontent = '/'.join(filtertag.split('/')[1:])
                 if len(sql_filters) > 0:
@@ -184,9 +186,9 @@ class RuleCache(object):
                         if fieldname != fieldnames.split(',')[0].strip():
                             sql += ' or '
                         if searchcontent.find('*') == -1:
-                            sql += 'cast('+fieldname + " as text) like :"+fieldname+" "
+                            sql += 'cast(' + fieldname + " as text) like :" + fieldname + " "
                         else:
-                            sql += 'cast('+fieldname + " as text) like '%'|| :"+fieldname+" || '%' "
+                            sql += 'cast(' + fieldname + " as text) like '%'|| :" + fieldname + " || '%' "
                         sql_filters[fieldname] = searchcontent.replace('*', '')
                     else:
                         # not a valid fieldname, add a tag to make sure our sql statement is valid
@@ -194,28 +196,28 @@ class RuleCache(object):
                 sql += ' ) '
 
             # apply sort order (if any)
-            sql_sort =[]
+            sql_sort = []
             for sortField in sort_by.split(','):
                 if sortField.split(' ')[0] in self._rule_fields:
                     if sortField.split(' ')[-1].lower() == 'desc':
-                        sql_sort.append('%s desc'%sortField.split()[0])
+                        sql_sort.append('%s desc' % sortField.split()[0])
                     else:
-                        sql_sort.append('%s asc'%sortField.split()[0])
+                        sql_sort.append('%s asc' % sortField.split()[0])
 
             # count total number of rows
-            cur.execute('select count(*) from (%s) a'%sql, sql_filters)
+            cur.execute('select count(*) from (%s) a' % sql, sql_filters)
             result['total_rows'] = cur.fetchall()[0][0]
 
             if len(sql_sort) > 0:
-                sql += ' order by %s'%(','.join(sql_sort))
+                sql += ' order by %s' % (','.join(sql_sort))
 
             if str(limit) != '0' and str(limit).isdigit():
-                sql += ' limit %s'%(limit)
+                sql += ' limit %s' % limit
                 if str(offset) != '0' and str(offset).isdigit():
-                    sql += ' offset %s'%(offset)
+                    sql += ' offset %s' % offset
 
             # fetch results
-            cur.execute(sql,sql_filters)
+            cur.execute(sql, sql_filters)
             while True:
                 row = cur.fetchone()
                 if row is None:
@@ -228,7 +230,7 @@ class RuleCache(object):
 
         return result
 
-    def listClassTypes(self):
+    def list_class_types(self):
         """
         :return: list of installed classtypes
         """
@@ -236,7 +238,7 @@ class RuleCache(object):
         if os.path.exists(self.cachefile):
             db = sqlite3.connect(self.cachefile)
             cur = db.cursor()
-            cur.execute('select distinct classtype from rules')
+            cur.execute('SELECT DISTINCT classtype FROM rules')
             for record in cur.fetchall():
                 result.append(record[0])
 
diff --git a/src/opnsense/scripts/suricata/listAlertLogs.py b/src/opnsense/scripts/suricata/listAlertLogs.py
index f45969f7b..3f717aa4a 100755
--- a/src/opnsense/scripts/suricata/listAlertLogs.py
+++ b/src/opnsense/scripts/suricata/listAlertLogs.py
@@ -40,23 +40,23 @@ from lib.log import reverse_log_reader
 
 if __name__ == '__main__':
     result = []
-    for filename in sorted(glob.glob('%s*'%suricata_alert_log)):
+    for filename in sorted(glob.glob('%s*' % suricata_alert_log)):
         row = dict()
         row['size'] = os.stat(filename).st_size
         # always list first file and non empty next.
-        if row['size']  > 0 or filename.split('/')[-1].count('.') == 1:
+        if row['size'] > 0 or filename.split('/')[-1].count('.') == 1:
             row['modified'] = os.stat(filename).st_mtime
             row['filename'] = filename.split('/')[-1]
             # try to find actual timestamp from file
             for line in reverse_log_reader(filename=filename):
                 if line['line'] != '':
                     record = ujson.loads(line['line'])
-                    if record.has_key('timestamp'):
-                        row['modified'] = int(time.mktime(datetime.datetime.strptime(record['timestamp'].split('.')[0], "%Y-%m-%dT%H:%M:%S").timetuple()))
+                    if 'timestamp' in record:
+                        row['modified'] = int(time.mktime(datetime.datetime.strptime(record['timestamp'].split('.')[0],
+                                                                                     "%Y-%m-%dT%H:%M:%S").timetuple()))
                         break
 
-
-            ext=filename.split('.')[-1]
+            ext = filename.split('.')[-1]
             if ext.isdigit():
                 row['sequence'] = int(ext)
             else:
diff --git a/src/opnsense/scripts/suricata/listClasstypes.py b/src/opnsense/scripts/suricata/listClasstypes.py
index 012f1ff95..4fdc15095 100755
--- a/src/opnsense/scripts/suricata/listClasstypes.py
+++ b/src/opnsense/scripts/suricata/listClasstypes.py
@@ -35,10 +35,10 @@ from lib.rulecache import RuleCache
 
 if __name__ == '__main__':
     rc = RuleCache()
-    if rc.isChanged():
+    if rc.is_changed():
         rc.create()
 
-    items=rc.listClassTypes()
-    result = {'items': items, 'count':len(items)}
+    items = rc.list_class_types()
+    result = {'items': items, 'count': len(items)}
 
     print (ujson.dumps(result))
diff --git a/src/opnsense/scripts/suricata/listInstallableRulesets.py b/src/opnsense/scripts/suricata/listInstallableRulesets.py
index f66286103..1e91cae32 100755
--- a/src/opnsense/scripts/suricata/listInstallableRulesets.py
+++ b/src/opnsense/scripts/suricata/listInstallableRulesets.py
@@ -43,10 +43,10 @@ if __name__ == '__main__':
     items = dict()
     for rule in md.list_rules():
         items[rule['filename']] = rule
-        rule_filename = ('%s/%s'%(rule_source_directory, rule['filename'])).replace('//', '/')
+        rule_filename = ('%s/%s' % (rule_source_directory, rule['filename'])).replace('//', '/')
         if os.path.exists(rule_filename):
             items[rule['filename']]['modified_local'] = os.stat(rule_filename).st_mtime
         else:
             items[rule['filename']]['modified_local'] = None
-    result = {'items': items, 'count':len(items)}
+    result = {'items': items, 'count': len(items)}
     print (ujson.dumps(result))
diff --git a/src/opnsense/scripts/suricata/queryAlertLog.py b/src/opnsense/scripts/suricata/queryAlertLog.py
index 5b6d9349c..c4925b9b4 100755
--- a/src/opnsense/scripts/suricata/queryAlertLog.py
+++ b/src/opnsense/scripts/suricata/queryAlertLog.py
@@ -36,17 +36,17 @@ import sre_constants
 import shlex
 import ujson
 from lib.log import reverse_log_reader
-from lib.params import updateParams
+from lib.params import update_params
 from lib import suricata_alert_log
 
 if __name__ == '__main__':
     # handle parameters
-    parameters = {'limit':'0','offset':'0', 'filter':'','fileid':''}
-    updateParams(parameters)
+    parameters = {'limit': '0', 'offset': '0', 'filter': '', 'fileid': ''}
+    update_params(parameters)
 
     # choose logfile by number
     if parameters['fileid'].isdigit():
-        suricata_log = '%s.%d'%(suricata_alert_log,int(parameters['fileid']))
+        suricata_log = '%s.%d' % (suricata_alert_log, int(parameters['fileid']))
     else:
         suricata_log = suricata_alert_log
 
@@ -60,13 +60,12 @@ if __name__ == '__main__':
     else:
         offset = 0
 
-
     data_filters = {}
     data_filters_comp = {}
-    for filter in shlex.split(parameters['filter']):
-        filterField = filter.split('/')[0]
-        if filter.find('/') > -1:
-            data_filters[filterField] = '/'.join(filter.split('/')[1:])
+    for filter_txt in shlex.split(parameters['filter']):
+        filterField = filter_txt.split('/')[0]
+        if filter_txt.find('/') > -1:
+            data_filters[filterField] = '/'.join(filter_txt.split('/')[1:])
             filter_regexp = data_filters[filterField]
             filter_regexp = filter_regexp.replace('*', '.*')
             filter_regexp = filter_regexp.lower()
@@ -74,7 +73,7 @@ if __name__ == '__main__':
                 data_filters_comp[filterField] = re.compile(filter_regexp)
             except sre_constants.error:
                 # remove illegal expression
-                #del data_filters[filterField]
+                # del data_filters[filterField]
                 data_filters_comp[filterField] = re.compile('.*')
 
     # filter one specific log line
@@ -84,7 +83,7 @@ if __name__ == '__main__':
         log_start_pos = None
 
     # query suricata eve log
-    result = {'filters':data_filters,'rows':[],'total_rows':0,'origin':suricata_log.split('/')[-1]}
+    result = {'filters': data_filters, 'rows': [], 'total_rows': 0, 'origin': suricata_log.split('/')[-1]}
     if os.path.exists(suricata_log):
         for line in reverse_log_reader(filename=suricata_log, start_pos=log_start_pos):
             try:
@@ -107,7 +106,8 @@ if __name__ == '__main__':
                 for filterKeys in data_filters:
                     filter_hit = False
                     for filterKey in filterKeys.split(','):
-                        if record.has_key(filterKey) and data_filters_comp[filterKeys].match(('%s'%record[filterKey]).lower()):
+                        if filterKey in record and data_filters_comp[filterKeys].match(
+                                ('%s' % record[filterKey]).lower()):
                             filter_hit = True
 
                     if not filter_hit:
@@ -121,7 +121,7 @@ if __name__ == '__main__':
                         break
 
             # only try to fetch one line when filepos is given
-            if log_start_pos != None:
+            if log_start_pos is not None:
                 break
 
     # output results
diff --git a/src/opnsense/scripts/suricata/queryInstalledRules.py b/src/opnsense/scripts/suricata/queryInstalledRules.py
index 72fcec2cc..d3267b5ef 100755
--- a/src/opnsense/scripts/suricata/queryInstalledRules.py
+++ b/src/opnsense/scripts/suricata/queryInstalledRules.py
@@ -35,21 +35,24 @@
 
 import ujson
 from lib.rulecache import RuleCache
-from lib.params import updateParams
+from lib.params import update_params
 
 
 # Because rule parsing isn't very useful when the rule definitions didn't change we create a single json file
 # to hold the last results (combined with creation date and number of files).
 if __name__ == '__main__':
     rc = RuleCache()
-    if rc.isChanged():
+    if rc.is_changed():
         rc.create()
 
     # load parameters, ignore validation here the search method only processes valid input
-    parameters = {'limit':'0','offset':'0','sort_by':'', 'filter':''}
-    updateParams(parameters)
+    parameters = {'limit': '0', 'offset': '0', 'sort_by': '', 'filter': ''}
+    update_params(parameters)
+    # rename, filter tag to filter_txt
+    parameters['filter_txt'] = parameters['filter']
+    del parameters['filter']
 
     # dump output
-    result=rc.search(**parameters)
+    result = rc.search(**parameters)
     result['parameters'] = parameters
     print (ujson.dumps(result))
diff --git a/src/opnsense/scripts/suricata/rule-updater.py b/src/opnsense/scripts/suricata/rule-updater.py
index e2deb05bf..65f4dec7d 100755
--- a/src/opnsense/scripts/suricata/rule-updater.py
+++ b/src/opnsense/scripts/suricata/rule-updater.py
@@ -40,7 +40,7 @@ from lib import rule_source_directory
 
 # check for a running update process, this may take a while so it's better to check...
 try:
-    lck = open('/tmp/suricata-rule-updater.py','w+')
+    lck = open('/tmp/suricata-rule-updater.py', 'w+')
     fcntl.flock(lck, fcntl.LOCK_EX | fcntl.LOCK_NB)
 except IOError:
     # already running, exit status 99
@@ -48,13 +48,13 @@ except IOError:
 
 if __name__ == '__main__':
     # load list of configured rules from generated config
-    enabled_rulefiles=[]
-    updater_conf='/usr/local/etc/suricata/rule-updater.config'
+    enabled_rulefiles = []
+    updater_conf = '/usr/local/etc/suricata/rule-updater.config'
     if os.path.exists(updater_conf):
         cnf = ConfigParser()
         cnf.read(updater_conf)
         for section in cnf.sections():
-            if cnf.has_option(section,'enabled') and cnf.getint(section,'enabled') == 1:
+            if cnf.has_option(section, 'enabled') and cnf.getint(section, 'enabled') == 1:
                 enabled_rulefiles.append(section.strip())
 
     # download / remove rules
@@ -62,14 +62,14 @@ if __name__ == '__main__':
     dl = downloader.Downloader(target_dir=rule_source_directory)
     for rule in md.list_rules():
         if 'url' in rule['source']:
-            download_proto=str(rule['source']['url']).split(':')[0].lower()
+            download_proto = str(rule['source']['url']).split(':')[0].lower()
             if dl.is_supported(download_proto):
                 if rule['filename'] not in enabled_rulefiles:
                     try:
                         # remove configurable but unselected file
-                        os.remove(('%s/%s'%(rule_source_directory, rule['filename'])).replace('//', '/'))
-                    except:
+                        os.remove(('%s/%s' % (rule_source_directory, rule['filename'])).replace('//', '/'))
+                    except OSError:
                         pass
                 else:
-                    url = ('%s/%s'%(rule['source']['url'],rule['filename']))
+                    url = ('%s/%s' % (rule['source']['url'], rule['filename']))
                     dl.download(proto=download_proto, url=url)