diff --git a/eopayment/sips2.py b/eopayment/sips2.py
index 440546c..7b8de2d 100644
--- a/eopayment/sips2.py
+++ b/eopayment/sips2.py
@@ -1,18 +1,21 @@
 # -*- coding: utf-8 -*-
-import collections
-import json
-from six.moves.urllib import parse as urlparse
-import string
+
 from decimal import Decimal
-import uuid
+from gettext import gettext as _
+import collections
 import hashlib
 import hmac
-from gettext import gettext as _
-import requests
+import json
+import string
+import uuid
 import warnings
 
+from six.moves.urllib import parse as urlparse
+
+import requests
+
 from .common import (PaymentCommon, FORM, Form, PaymentResponse, PAID, ERROR,
-        CANCELED, ResponseError, force_text)
+                     CANCELED, ResponseError, force_text)
 
 __all__ = ['Payment']
 
@@ -266,9 +269,13 @@ class Payment(PaymentCommon):
         data['seal'] = self.get_seal_for_json_ws_data(data)
         url = self.WS_URL.get(self.platform) + '/rs-services/v2/cashManagement/%s' % endpoint
         self.logger.debug('posting %r to %s endpoint', data, endpoint)
-        response = requests.post(url, data=json.dumps(data),
-                headers={'content-type': 'application/json',
-                         'accept': 'application/json'})
+        response = requests.post(
+            url,
+            data=json.dumps(data),
+            headers={
+                'content-type': 'application/json',
+                'accept': 'application/json'
+            })
         self.logger.debug('received %r', response.content)
         response.raise_for_status()
         json_response = response.json()
@@ -301,9 +308,13 @@ class Payment(PaymentCommon):
         data['seal'] = self.get_seal_for_json_ws_data(data)
         url = self.WS_URL.get(self.platform) + '/rs-services/v2/diagnostic/getTransactionData'
         self.logger.debug('posting %r to %s endpoint', data, 'diagnostic')
-        response = requests.post(url, data=json.dumps(data),
-                headers={'content-type': 'application/json',
-                         'accept': 'application/json'})
+        response = requests.post(
+            url,
+            data=json.dumps(data),
+            headers={
+                'content-type': 'application/json',
+                'accept': 'application/json',
+            })
         self.logger.debug('received %r', response.content)
         response.raise_for_status()
         return response.json()