diff --git a/pyotrs/lib.py b/pyotrs/lib.py
index d9751cebecaf4e2fe1df8fefe256722387927121..07c19af37278021e04dec73067f24f4675814357 100644
--- a/pyotrs/lib.py
+++ b/pyotrs/lib.py
@@ -128,6 +128,7 @@ class HTTPError(PyOTRSError):
 
 class Article(object):
     """PyOTRS Article class """
+
     def __init__(self, dct):
         fields = {}
         for key, value in dct.items():
@@ -300,6 +301,7 @@ class Article(object):
 
 class Attachment(object):
     """PyOTRS Attachment class """
+
     def __init__(self, dct):
         self.__dict__ = dct
 
@@ -499,6 +501,7 @@ class Ticket(object):
            dynamic_fields (list): List of DynamicField objects
 
     """
+
     def __init__(self, dct):
         # store OTRS Top Level fields
         self.fields = {}
@@ -730,6 +733,7 @@ class SessionStore(object):
         ArgumentMissingError
 
     """
+
     def __init__(self, file_path=None, session_timeout=None,
                  value=None, created=None, expires=None):
         if not file_path:
@@ -874,6 +878,7 @@ class Client(object):
             "/otrs/nph-genericinterface.pl/Webservice/"
 
     """
+
     def __init__(self,
                  baseurl=None,
                  username=None,
@@ -974,6 +979,7 @@ class Client(object):
         * session_create
         * session_restore_or_set_up_new  # try to get session_id from a (json) file on disc
     """
+
     def session_check_is_valid(self, session_id=None):
         """check whether session_id is currently valid
 
@@ -1074,6 +1080,7 @@ class Client(object):
     GenericInterface::Operation::Ticket::TicketCreate
         * ticket_create
     """
+
     def ticket_create(self,
                       ticket=None,
                       article=None,
@@ -1131,6 +1138,7 @@ class Client(object):
         * ticket_get_by_list
         * ticket_get_by_number
     """
+
     def ticket_get_by_id(self,
                          ticket_id,
                          articles=False,
@@ -1274,6 +1282,7 @@ class Client(object):
         * ticket_search
         * ticket_search_full_text
     """
+
     def ticket_search(self, dynamic_fields=None, **kwargs):
         """Search for ticket
 
@@ -1341,6 +1350,7 @@ class Client(object):
         * ticket_update
         * ticket_update_set_pending
     """
+
     def ticket_update(self,
                       ticket_id,
                       article=None,
@@ -1560,6 +1570,7 @@ class Client(object):
     GenericInterface::Operation::Link::LinkAdd
         * link_add
     """
+
     def link_add(self,
                  src_object_id,
                  dst_object_id,
@@ -1604,6 +1615,7 @@ class Client(object):
     GenericInterface::Operation::Link::LinkDelete
         * link_delete
     """
+
     def link_delete(self,
                     src_object_id,
                     dst_object_id,
@@ -1645,9 +1657,10 @@ class Client(object):
     GenericInterface::Operation::Link::LinkDeleteAll
         * link_delete_all
     """
+
     def link_delete_all(self,
                         object_id,
-                        object_type="Ticket",):
+                        object_type="Ticket", ):
         """link_delete_all
 
         Args:
@@ -1676,6 +1689,7 @@ class Client(object):
     GenericInterface::Operation::Link::LinkList
         * link_list
     """
+
     def link_list(self,
                   src_object_id,
                   src_object_type="Ticket",
@@ -1727,6 +1741,7 @@ class Client(object):
     GenericInterface::Operation::Link::PossibleLinkList
         * link_possible_link_list
     """
+
     def link_possible_link_list(self):
         """link_possible_link_list
 
@@ -1752,6 +1767,7 @@ class Client(object):
     GenericInterface::Operation::Link::PossibleObjectsList
         * link_possible_objects_list
     """
+
     def link_possible_objects_list(self,
                                    object_type="Ticket"):
         """link_possible_objects_list
@@ -1783,6 +1799,7 @@ class Client(object):
     GenericInterface::Operation::Link::PossibleTypesList
         * link_possible_types_list
     """
+
     def link_possible_types_list(self,
                                  src_object_type="Ticket",
                                  dst_object_type="Ticket"):
@@ -1910,7 +1927,7 @@ class Client(object):
             headers.update({"Content-Type": "application/json"})
 
             json_payload = json.dumps(payload)
-            
+
             # print("sending {0} to {1} as {2}".format(payload, url, http_method.upper()))
             try:
                 response = requests.request(http_method.upper(),