diff --git a/src/cutecoin/core/net/node.py b/src/cutecoin/core/net/node.py
index 3c7ef40afe9b429d60937c15e4d41df55032e291..60cb7235b88edd6f4a674f8c85120d3ed9e75949 100644
--- a/src/cutecoin/core/net/node.py
+++ b/src/cutecoin/core/net/node.py
@@ -16,9 +16,9 @@ from PyQt5.QtCore import QObject, pyqtSignal
 
 
 class Node(QObject):
-    '''
+    """
     classdocs
-    '''
+    """
 
     ONLINE = 1
     OFFLINE = 2
@@ -27,10 +27,17 @@ class Node(QObject):
 
     changed = pyqtSignal()
 
-    def __init__(self, currency, endpoints, pubkey, block, state):
-        '''
+    def __init__(self, currency: str, endpoints: list, pubkey: str, block: int, state: int):
+        """
         Constructor
-        '''
+        :param str currency: Name of the currency
+        :param list endpoints: List of BMAEndpoint
+        :param str pubkey: Public key of the node owner
+        :param int block: Last block number
+        :param int state: State of the node
+        :return:
+        """
+
         super().__init__()
         self._endpoints = endpoints
         self._pubkey = pubkey
@@ -91,7 +98,7 @@ class Node(QObject):
         return self._pubkey
 
     @property
-    def endpoint(self):
+    def endpoint(self) -> BMAEndpoint:
         return next((e for e in self._endpoints if type(e) is BMAEndpoint))
 
     @property
@@ -193,3 +200,7 @@ class Node(QObject):
                     time.sleep(interval)
         except RequestException as e:
             self._state = Node.OFFLINE
+
+    def __str__(self):
+        return ','.join([str(self.pubkey), str(self.endpoint.server), str(self.endpoint.port), str(self.block),
+                         str(self.currency), str(self.state), str(self.neighbours)])
diff --git a/src/cutecoin/models/network.py b/src/cutecoin/models/network.py
index 946d1302e3f58d789a446f23f3ff117d11164f33..63d725fa89131a2f451f2a1e23f4169889a6988e 100644
--- a/src/cutecoin/models/network.py
+++ b/src/cutecoin/models/network.py
@@ -94,7 +94,12 @@ class NetworkTableModel(QAbstractTableModel):
 
         return self.column_types[section]
 
-    def data_node(self, node):
+    def data_node(self, node: Node) -> tuple:
+        """
+        Return node data tuple
+        :param ..core.net.node.Node node: Network node
+        :return:
+        """
         try:
             person = Person.lookup(node.pubkey, self.community)
             uid = person.name
@@ -112,7 +117,7 @@ class NetworkTableModel(QAbstractTableModel):
             address = node.endpoint.ipv6
         port = node.endpoint.port
 
-        return (node.pubkey, is_member, uid, address, port, node.block)
+        return node.pubkey, is_member, uid, address, port, node.block
 
     def data(self, index, role):
         row = index.row()