diff --git a/splunk_connect_for_snmp_mib_server/mib_server.py b/splunk_connect_for_snmp_mib_server/mib_server.py
index 9fbbd8be..fdcaf089 100644
--- a/splunk_connect_for_snmp_mib_server/mib_server.py
+++ b/splunk_connect_for_snmp_mib_server/mib_server.py
@@ -13,7 +13,6 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 #   ########################################################################
-import json
 
 from flask import Flask, request
 from flask_autoindex import AutoIndex
@@ -24,7 +23,6 @@
 
 
 class MibServer:
-
     def __init__(self, args, server_config):
         self._args = args
         self._server_config = server_config
@@ -33,7 +31,7 @@ def __init__(self, args, server_config):
         self.data_format = {
             "METRIC": self._translator.format_metric_data,
             "TEXT": self._translator.format_text_event,
-            "MULTIMETRIC": self._translator.format_multimetric_data
+            "MULTIMETRIC": self._translator.format_multimetric_data,
         }
 
     def build_flask_app(self):
diff --git a/splunk_connect_for_snmp_mib_server/translator.py b/splunk_connect_for_snmp_mib_server/translator.py
index 1d9f0f76..f9c2088f 100644
--- a/splunk_connect_for_snmp_mib_server/translator.py
+++ b/splunk_connect_for_snmp_mib_server/translator.py
@@ -349,7 +349,9 @@ def format_text_event(self, var_binds: list):
     def format_metric_data(self, var_bind: list, index=0):
         """
         format one varBind object into metric format
-        @param var_bind: single varBind object
+        :param var_bind: varBind list, usually it contains only one element
+        :param index: index of the element we want to process
+        :return: translated data dictionary
         """
         var_bind = var_bind[index]
         metric_data = {}
@@ -376,7 +378,7 @@ def format_metric_data(self, var_bind: list, index=0):
         # .. if the metric name contains a . replace with _
         metric_data[
             "metric_name"
-        ] = f'sc4snmp.{translated_oid.replace(".","_").replace("::", ".")}'
+        ] = f'sc4snmp.{translated_oid.replace(".", "_").replace("::", ".")}'
         metric_data["_value"] = translated_val
         metric_data["metric_type"] = val_type
         if custom_translated_oid:
@@ -399,6 +401,9 @@ def format_multimetric_data(self, varbinds: list) -> dict:
         """
         result_dict = self.format_metric_data(varbinds)
         result_string = self.format_text_event(varbinds)
-        result = {'metric_name': result_dict['metric_name'], 'metric': json.dumps(result_dict),
-                  'non_metric': result_string}
+        result = {
+            "metric_name": result_dict["metric_name"],
+            "metric": json.dumps(result_dict),
+            "non_metric": result_string,
+        }
         return result
diff --git a/tests/test_translator.py b/tests/test_translator.py
index 0e58b457..accc00eb 100644
--- a/tests/test_translator.py
+++ b/tests/test_translator.py
@@ -16,12 +16,10 @@
 from unittest import TestCase, mock
 
 import mongomock
-import yaml
 
 from splunk_connect_for_snmp_mib_server.translator import Translator
 import os
 import logging
-import json
 from pysnmp.hlapi import *
 
 logger = logging.getLogger(__name__)
@@ -91,7 +89,7 @@ def setUp(self):
                 "mib": {"database": "files", "collection": "mib_files"},
             },
         }
-        #server_config["snmp"]["mibs"]["dir"] = "../mibs/pysnmp"
+        # server_config["snmp"]["mibs"]["dir"] = "../mibs/pysnmp"
         self.my_translator = Translator(server_config)
 
     @mongomock.patch()
@@ -193,11 +191,13 @@ def test_format_trap_invalid_input(self):
 
     @mongomock.patch()
     def test_format_metric(self):
-        input_var_binds = [{
-            "oid": "1.3.6.1.2.1.1.3.0",
-            "val": "123",
-            "val_type": "TimeTicks",
-        }]
+        input_var_binds = [
+            {
+                "oid": "1.3.6.1.2.1.1.3.0",
+                "val": "123",
+                "val_type": "TimeTicks",
+            }
+        ]
         translated_dict = self.my_translator.format_metric_data(input_var_binds)
         for required_key in ["metric_name", "_value", "metric_type"]:
             assert required_key in translated_dict
@@ -208,11 +208,13 @@ def test_format_metric(self):
 
     @mongomock.patch()
     def test_format_non_existing_metric(self):
-        input_var_binds = [{
-            "oid": "1.3.6666.16666.26666.16666.1.3.0",
-            "val": "123",
-            "val_type": "TimeTicks",
-        }]
+        input_var_binds = [
+            {
+                "oid": "1.3.6666.16666.26666.16666.1.3.0",
+                "val": "123",
+                "val_type": "TimeTicks",
+            }
+        ]
         translated_dict = self.my_translator.format_metric_data(input_var_binds)
         for required_key in ["metric_name", "_value", "metric_type"]:
             assert required_key in translated_dict
@@ -279,11 +281,13 @@ def test_translate_all_snmp_simulator_data_types(self):
             and len(value_types) == len(expected_translations)
         )
         for index in range(0, len(oids)):
-            input_var_binds_colons = [{
-                "oid": oids[index],
-                "val": str_values[index],
-                "val_type": value_types[index],
-            }]
+            input_var_binds_colons = [
+                {
+                    "oid": oids[index],
+                    "val": str_values[index],
+                    "val_type": value_types[index],
+                }
+            ]
             translated_metrics = self.my_translator.format_metric_data(
                 input_var_binds_colons
             )
@@ -309,7 +313,5 @@ def test_more_mib_files(self):
         ]
 
         for i in range(0, len(input_var_binds)):
-            translated_dict = self.my_translator.format_metric_data(
-                input_var_binds, i
-            )
+            translated_dict = self.my_translator.format_metric_data(input_var_binds, i)
             assert translated_dict["metric_name"] == expected_values[i]