collectors/python.d: format modules code (#7832)

* collectors/python.d/adaptec_raid: format code

* collectors/python.d/am2320: format code

* collectors/python.d/apache: format code

* collectors/python.d/beanstalk: format code

* collectors/python.d/bind_rndc: format code

* collectors/python.d/boinc: format code

* collectors/python.d/ceph: format code

* collectors/python.d/couchdb: format code

* collectors/python.d/dns_query_time: format code

* collectors/python.d/dnsdist: format code

* collectors/python.d/dockerd: format code

* collectors/python.d/dovecot: format code

* collectors/python.d/energid: format code

* collectors/python.d/example: format code

* collectors/python.d/exim: format code

* collectors/python.d/fail2ban: format code

* collectors/python.d/freeradius: format code

* collectors/python.d/gearman: format code

* collectors/python.d/go_expvar: format code

* collectors/python.d/haproxy: format code

* collectors/python.d/hddtemp: format code

* collectors/python.d/hpssa: format code

* collectors/python.d/httpcheck: format code

* collectors/python.d/icecast: format code

* collectors/python.d/ipfs: format code

* collectors/python.d/isc_dhcpd: format code

* collectors/python.d/litespeed: format code

* collectors/python.d/megacli: format code

* collectors/python.d/memcached: format code

* collectors/python.d/mongodb: format code

* collectors/python.d/mysql: format code

* collectors/python.d/nginx: format code

* collectors/python.d/nginx_plus: format code

* collectors/python.d/nsd: format code

* collectors/python.d/ntpd: format code

* collectors/python.d/openldap: format code

* collectors/python.d/oracledb: format code

* collectors/python.d/ovpn_status_log: format code

* collectors/python.d/phpfpm: format code

* collectors/python.d/portcheck: format code

* collectors/python.d/powerdns: format code

* collectors/python.d/proxysql: format code

* collectors/python.d/puppet: format code

* collectors/python.d/redis: format code

* collectors/python.d/rethinkdbs: format code

* collectors/python.d/retroshare: format code

* collectors/python.d/riakkv: format code

* collectors/python.d/samba: format code

* collectors/python.d/sensors: format code

* collectors/python.d/smartd_log: format code

* collectors/python.d/spigotmc: format code

* collectors/python.d/springboot: format code

* collectors/python.d/squid: format code

* collectors/python.d/tomcat: format code

* collectors/python.d/tor: format code

* collectors/python.d/traefik: format code

* collectors/python.d/unbound: format code

* collectors/python.d/uwsgi: format code

* collectors/python.d/varnish: format code

* collectors/python.d/w1sensor: format code

* collectors/python.d/weblog: format code

61 files changed, 162 insertions, 187 deletions

diff --git a/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py
index 3fcb5fda8d..564c2ce87e 100644
--- a/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py
+++ b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py
@@ -5,13 +5,11 @@
 
 
 import re
-
 from copy import deepcopy
 
 from bases.FrameworkServices.ExecutableService import ExecutableService
 from bases.collection import find_binary
 
-
 disabled_by_default = True
 
 update_every = 5
diff --git a/collectors/python.d.plugin/am2320/am2320.chart.py b/collectors/python.d.plugin/am2320/am2320.chart.py
index c15e16eee2..8e66544bd5 100644
--- a/collectors/python.d.plugin/am2320/am2320.chart.py
+++ b/collectors/python.d.plugin/am2320/am2320.chart.py
@@ -7,14 +7,13 @@ try:
     import board
     import busio
     import adafruit_am2320
+
     HAS_AM2320 = True
 except ImportError:
     HAS_AM2320 = False
 
-
 from bases.FrameworkServices.SimpleService import SimpleService
 
-
 ORDER = [
     'temperature',
     'humidity',
@@ -60,9 +59,9 @@ class Service(SimpleService):
     def get_data(self):
         try:
             return {
-            'temperature': self.am.temperature,
-            'humidity': self.am.relative_humidity,
-           }
+                'temperature': self.am.temperature,
+                'humidity': self.am.relative_humidity,
+            }
 
         except (OSError, RuntimeError) as error:
             self.error(error)
diff --git a/collectors/python.d.plugin/apache/apache.chart.py b/collectors/python.d.plugin/apache/apache.chart.py
index 655616d072..14acb1602d 100644
--- a/collectors/python.d.plugin/apache/apache.chart.py
+++ b/collectors/python.d.plugin/apache/apache.chart.py
@@ -5,7 +5,6 @@
 
 from bases.FrameworkServices.UrlService import UrlService
 
-
 ORDER = [
     'requests',
     'connections',
diff --git a/collectors/python.d.plugin/beanstalk/beanstalk.chart.py b/collectors/python.d.plugin/beanstalk/beanstalk.chart.py
index 9c83198728..396543e5ae 100644
--- a/collectors/python.d.plugin/beanstalk/beanstalk.chart.py
+++ b/collectors/python.d.plugin/beanstalk/beanstalk.chart.py
@@ -5,6 +5,7 @@
 
 try:
     import beanstalkc
+
     BEANSTALKC = True
 except ImportError:
     BEANSTALKC = False
@@ -12,7 +13,6 @@ except ImportError:
 from bases.FrameworkServices.SimpleService import SimpleService
 from bases.loaders import load_yaml
 
-
 ORDER = [
     'cpu_usage',
     'jobs_rate',
@@ -109,7 +109,7 @@ CHARTS = {
         'options': [None, 'Uptime', 'seconds', 'server statistics', 'beanstalk.uptime', 'line'],
         'lines': [
             ['uptime'],
-            ]
+        ]
     }
 }
 
diff --git a/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py b/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py
index 60f40c2f7a..9d6c9fec7d 100644
--- a/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py
+++ b/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py
@@ -4,13 +4,11 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
-
 from collections import defaultdict
 from subprocess import Popen
 
-from bases.collection import find_binary
 from bases.FrameworkServices.SimpleService import SimpleService
-
+from bases.collection import find_binary
 
 update_every = 30
 
diff --git a/collectors/python.d.plugin/boinc/boinc.chart.py b/collectors/python.d.plugin/boinc/boinc.chart.py
index e10b28ceaf..a31eda1c2b 100644
--- a/collectors/python.d.plugin/boinc/boinc.chart.py
+++ b/collectors/python.d.plugin/boinc/boinc.chart.py
@@ -6,10 +6,8 @@
 import socket
 
 from bases.FrameworkServices.SimpleService import SimpleService
-
 from third_party import boinc_client
 
-
 ORDER = [
     'tasks',
     'states',
diff --git a/collectors/python.d.plugin/ceph/ceph.chart.py b/collectors/python.d.plugin/ceph/ceph.chart.py
index fe9b2b9ab2..a85576eebf 100644
--- a/collectors/python.d.plugin/ceph/ceph.chart.py
+++ b/collectors/python.d.plugin/ceph/ceph.chart.py
@@ -5,6 +5,7 @@
 
 try:
     import rados
+
     CEPH = True
 except ImportError:
     CEPH = False
@@ -161,7 +162,7 @@ class Service(SimpleService):
         :return: None
         """
         # Pool lines
-        for pool in sorted(self._get_df()['pools'], key=lambda x:sorted(x.keys())):
+        for pool in sorted(self._get_df()['pools'], key=lambda x: sorted(x.keys())):
             self.definitions['pool_usage']['lines'].append([pool['name'],
                                                             pool['name'],
                                                             'absolute'])
@@ -169,20 +170,20 @@ class Service(SimpleService):
                                                               pool['name'],
                                                               'absolute'])
             self.definitions['pool_read_bytes']['lines'].append(['read_{0}'.format(pool['name']),
-                                                                pool['name'],
-                                                                'absolute', 1, 1024])
-            self.definitions['pool_write_bytes']['lines'].append(['write_{0}'.format(pool['name']),
                                                                  pool['name'],
                                                                  'absolute', 1, 1024])
+            self.definitions['pool_write_bytes']['lines'].append(['write_{0}'.format(pool['name']),
+                                                                  pool['name'],
+                                                                  'absolute', 1, 1024])
             self.definitions['pool_read_operations']['lines'].append(['read_operations_{0}'.format(pool['name']),
-                                                                     pool['name'],
-                                                                     'absolute'])
-            self.definitions['pool_write_operations']['lines'].append(['write_operations_{0}'.format(pool['name']),
                                                                       pool['name'],
                                                                       'absolute'])
+            self.definitions['pool_write_operations']['lines'].append(['write_operations_{0}'.format(pool['name']),
+                                                                       pool['name'],
+                                                                       'absolute'])
 
         # OSD lines
-        for osd in sorted(self._get_osd_df()['nodes'], key=lambda x:sorted(x.keys())):
+        for osd in sorted(self._get_osd_df()['nodes'], key=lambda x: sorted(x.keys())):
             self.definitions['osd_usage']['lines'].append([osd['name'],
                                                            osd['name'],
                                                            'absolute'])
diff --git a/collectors/python.d.plugin/couchdb/couchdb.chart.py b/collectors/python.d.plugin/couchdb/couchdb.chart.py
index 50fe6669f5..a395f356cf 100644
--- a/collectors/python.d.plugin/couchdb/couchdb.chart.py
+++ b/collectors/python.d.plugin/couchdb/couchdb.chart.py
@@ -6,8 +6,8 @@
 
 from collections import namedtuple, defaultdict
 from json import loads
-from threading import Thread
 from socket import gethostbyname, gaierror
+from threading import Thread
 
 try:
     from queue import Queue
@@ -16,10 +16,8 @@ except ImportError:
 
 from bases.FrameworkServices.UrlService import UrlService
 
-
 update_every = 1
 
-
 METHODS = namedtuple('METHODS', ['get_data', 'url', 'stats'])
 
 OVERVIEW_STATS = [
@@ -127,7 +125,7 @@ CHARTS = {
             ['couchdb_httpd_request_methods_GET', 'GET', 'incremental'],
             ['couchdb_httpd_request_methods_HEAD', 'HEAD', 'incremental'],
             ['couchdb_httpd_request_methods_OPTIONS', 'OPTIONS',
-                'incremental'],
+             'incremental'],
             ['couchdb_httpd_request_methods_POST', 'POST', 'incremental'],
             ['couchdb_httpd_request_methods_PUT', 'PUT', 'incremental']
         ]
@@ -141,13 +139,13 @@ CHARTS = {
             ['couchdb_httpd_status_codes_201', '201 Created', 'incremental'],
             ['couchdb_httpd_status_codes_202', '202 Accepted', 'incremental'],
             ['couchdb_httpd_status_codes_2xx', 'Other 2xx Success',
-                'incremental'],
+             'incremental'],
             ['couchdb_httpd_status_codes_3xx', '3xx Redirection',
-                'incremental'],
+             'incremental'],
             ['couchdb_httpd_status_codes_4xx', '4xx Client error',
-                'incremental'],
+             'incremental'],
             ['couchdb_httpd_status_codes_5xx', '5xx Server error',
-                'incremental']
+             'incremental']
         ]
     },
     'open_files': {
@@ -280,19 +278,19 @@ class Service(UrlService):
                     if self._get_raw_data(self.url + '/' + db)]
         for db in self.dbs:
             self.definitions['db_sizes_file']['lines'].append(
-                ['db_'+db+'_sizes_file', db, 'absolute', 1, 1000]
+                ['db_' + db + '_sizes_file', db, 'absolute', 1, 1000]
             )
             self.definitions['db_sizes_external']['lines'].append(
-                ['db_'+db+'_sizes_external', db, 'absolute', 1, 1000]
+                ['db_' + db + '_sizes_external', db, 'absolute', 1, 1000]
             )
             self.definitions['db_sizes_active']['lines'].append(
-                ['db_'+db+'_sizes_active', db, 'absolute', 1, 1000]
+                ['db_' + db + '_sizes_active', db, 'absolute', 1, 1000]
             )
             self.definitions['db_doc_counts']['lines'].append(
-                ['db_'+db+'_doc_count', db, 'absolute']
+                ['db_' + db + '_doc_count', db, 'absolute']
             )
             self.definitions['db_doc_del_counts']['lines'].append(
-                ['db_'+db+'_doc_del_count', db, 'absolute']
+                ['db_' + db + '_doc_del_count', db, 'absolute']
             )
         return UrlService.check(self)
 
diff --git a/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py b/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py
index 7fe8603147..7e1cb32b3c 100644
--- a/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py
+++ b/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py
@@ -11,6 +11,7 @@ try:
     import dns.message
     import dns.query
     import dns.name
+
     DNS_PYTHON = True
 except ImportError:
     DNS_PYTHON = False
@@ -22,7 +23,6 @@ except ImportError:
 
 from bases.FrameworkServices.SimpleService import SimpleService
 
-
 update_every = 5
 
 
diff --git a/collectors/python.d.plugin/dnsdist/dnsdist.chart.py b/collectors/python.d.plugin/dnsdist/dnsdist.chart.py
index d60858659d..a94928b22c 100644
--- a/collectors/python.d.plugin/dnsdist/dnsdist.chart.py
+++ b/collectors/python.d.plugin/dnsdist/dnsdist.chart.py
@@ -5,7 +5,6 @@ from json import loads
 
 from bases.FrameworkServices.UrlService import UrlService
 
-
 ORDER = [
     'queries',
     'queries_dropped',
@@ -21,7 +20,6 @@ ORDER = [
     'query_latency_avg'
 ]
 
-
 CHARTS = {
     'queries': {
         'options': [None, 'Client queries received', 'queries/s', 'queries', 'dnsdist.queries', 'line'],
diff --git a/collectors/python.d.plugin/dockerd/dockerd.chart.py b/collectors/python.d.plugin/dockerd/dockerd.chart.py
index 8bd45df9e4..bd9640bbf6 100644
--- a/collectors/python.d.plugin/dockerd/dockerd.chart.py
+++ b/collectors/python.d.plugin/dockerd/dockerd.chart.py
@@ -4,14 +4,14 @@
 
 try:
     import docker
+
     HAS_DOCKER = True
 except ImportError:
     HAS_DOCKER = False
 
-from bases.FrameworkServices.SimpleService import SimpleService
-
 from distutils.version import StrictVersion
 
+from bases.FrameworkServices.SimpleService import SimpleService
 
 # charts order (can be overridden if you want less charts, or different order)
 ORDER = [
@@ -44,7 +44,6 @@ CHARTS = {
     }
 }
 
-
 MIN_REQUIRED_VERSION = '3.2.0'
 
 
diff --git a/collectors/python.d.plugin/dovecot/dovecot.chart.py b/collectors/python.d.plugin/dovecot/dovecot.chart.py
index be1fa53d5f..dfaef28b5a 100644
--- a/collectors/python.d.plugin/dovecot/dovecot.chart.py
+++ b/collectors/python.d.plugin/dovecot/dovecot.chart.py
@@ -5,10 +5,8 @@
 
 from bases.FrameworkServices.SocketService import SocketService
 
-
 UNIX_SOCKET = '/var/run/dovecot/stats'
 
-
 ORDER = [
     'sessions',
     'logins',
@@ -51,7 +49,8 @@ CHARTS = {
         ]
     },
     'context_switches': {
-        'options': [None, 'Dovecot Context Switches', 'switches', 'context switches', 'dovecot.context_switches', 'line'],
+        'options': [None, 'Dovecot Context Switches', 'switches', 'context switches', 'dovecot.context_switches',
+                    'line'],
         'lines': [
             ['vol_cs', 'voluntary', 'absolute'],
             ['invol_cs', 'involuntary', 'absolute']
diff --git a/collectors/python.d.plugin/energid/energid.chart.py b/collectors/python.d.plugin/energid/energid.chart.py
index b8aa89e50d..079c32dc8f 100644
--- a/collectors/python.d.plugin/energid/energid.chart.py
+++ b/collectors/python.d.plugin/energid/energid.chart.py
@@ -41,9 +41,9 @@ CHARTS = {
     'mempool': {
         'options': [None, 'MemPool', 'MiB', 'memory', 'energid.mempool', 'area'],
         'lines': [
-            ['mempool_max', 'Max', 'absolute', None, 1024*1024],
-            ['mempool_current', 'Usage', 'absolute', None, 1024*1024],
-            ['mempool_txsize', 'TX Size', 'absolute', None, 1024*1024],
+            ['mempool_max', 'Max', 'absolute', None, 1024 * 1024],
+            ['mempool_current', 'Usage', 'absolute', None, 1024 * 1024],
+            ['mempool_txsize', 'TX Size', 'absolute', None, 1024 * 1024],
         ],
     },
     'secmem': {
@@ -93,22 +93,23 @@ METHODS = {
         'mempool_max': r['maxmempool'],
     },
     'getmemoryinfo': lambda r: dict([
-        ('secmem_' + k, v) for (k,v) in r['locked'].items()
+        ('secmem_' + k, v) for (k, v) in r['locked'].items()
     ]),
     'getnetworkinfo': lambda r: {
-        'network_timeoffset' : r['timeoffset'],
+        'network_timeoffset': r['timeoffset'],
         'network_connections': r['connections'],
     },
     'gettxoutsetinfo': lambda r: {
-        'utxo_count' : r['txouts'],
-        'utxo_xfers' : r['transactions'],
-        'utxo_size' : r['disk_size'],
-        'utxo_amount' : r['total_amount'],
+        'utxo_count': r['txouts'],
+        'utxo_xfers': r['transactions'],
+        'utxo_size': r['disk_size'],
+        'utxo_amount': r['total_amount'],
     },
 }
 
 JSON_RPC_VERSION = '1.1'
 
+
 class Service(UrlService):
     def __init__(self, configuration=None, name=None):
         UrlService.__init__(self, configuration=configuration, name=name)
diff --git a/collectors/python.d.plugin/example/example.chart.py b/collectors/python.d.plugin/example/example.chart.py
index cc8c187592..61ae47f22d 100644
--- a/