Improve PEP8 compliance in etender_service.py

+from datetime import date, datetime, timedelta
+from dateutil.parser import parse
+from dateutil.tz import tzlocal
 from iso8601 import parse_date
 from iso8601 import parse_date
+from jsonpath_rw import parse as parse_path
+from pytz import timezone
 from robot.output import LOGGER
 from robot.output import LOGGER
 from robot.output.loggerhelper import Message
 from robot.output.loggerhelper import Message
 from robot.libraries.BuiltIn import BuiltIn
 from robot.libraries.BuiltIn import BuiltIn
 from robot.errors import HandlerExecutionFailed
 from robot.errors import HandlerExecutionFailed
-from datetime import datetime, timedelta, date
-from dateutil.parser import parse
-from dateutil.tz import tzlocal
-from pytz import timezone
-from jsonpath_rw import parse as parse_path
-import time
 from op_robot_tests.tests_files.initial_data import (
 from op_robot_tests.tests_files.initial_data import (
     test_tender_data
     test_tender_data
 )
 )
+import time
 
 
 TIMEZONE = timezone('Europe/Kiev')
 TIMEZONE = timezone('Europe/Kiev')
 
 
+
 def convert_date_to_etender_format(isodate):
 def convert_date_to_etender_format(isodate):
-    iso_dt=parse_date(isodate)
+    iso_dt = parse_date(isodate)
     date_string = iso_dt.strftime("%d-%m-%Y")
     date_string = iso_dt.strftime("%d-%m-%Y")
-    return  date_string
+    return date_string
+
 
 
 def convert_time_to_etender_format(isodate):
 def convert_time_to_etender_format(isodate):
-    iso_dt=parse_date(isodate)
+    iso_dt = parse_date(isodate)
     time_string = iso_dt.strftime("%H:%M")
     time_string = iso_dt.strftime("%H:%M")
-    return  time_string
+    return time_string