diff --git a/qweechat/buffer.py b/qweechat/buffer.py
index 8c5398a..50b6675 100644
--- a/qweechat/buffer.py
+++ b/qweechat/buffer.py
@@ -190,9 +190,11 @@ class Buffer(QtCore.QObject):
                 'nicks': []
             }
         else:
-            self.nicklist[parent]['nicks'].append({'prefix': prefix,
-                                                   'name': name,
-                                                   'visible': visible})
+            self.nicklist[parent]['nicks'].append({
+                'prefix': prefix,
+                'name': name,
+                'visible': visible,
+            })
 
     def nicklist_remove_item(self, parent, group, name):
         """Remove a group/nick from nicklist."""
@@ -225,7 +227,11 @@ class Buffer(QtCore.QObject):
         for group in sorted(self.nicklist):
             for nick in sorted(self.nicklist[group]['nicks'],
                                key=lambda n: n['name']):
-                prefix_color = {'': '', ' ': '', '+': 'yellow'}
+                prefix_color = {
+                    '': '',
+                    ' ': '',
+                    '+': 'yellow',
+                }
                 color = prefix_color.get(nick['prefix'], 'green')
                 if color:
                     icon = QtGui.QIcon(
diff --git a/qweechat/network.py b/qweechat/network.py
index 064c45e..2495a5e 100644
--- a/qweechat/network.py
+++ b/qweechat/network.py
@@ -165,14 +165,20 @@ class Network(QtCore.QObject):
         self.send_to_weechat('\n'.join(_PROTO_SYNC_CMDS))
 
     def status_icon(self, status):
-        icon = {self.status_disconnected: 'dialog-close.png',
-                self.status_connecting: 'dialog-close.png',
-                self.status_connected: 'dialog-ok-apply.png'}
+        """Return the name of icon for a given status."""
+        icon = {
+            self.status_disconnected: 'dialog-close.png',
+            self.status_connecting: 'dialog-close.png',
+            self.status_connected: 'dialog-ok-apply.png',
+        }
         return icon.get(status, '')
 
     def get_options(self):
-        return {'server': self._server,
-                'port': self._port,
-                'ssl': 'on' if self._ssl else 'off',
-                'password': self._password,
-                'lines': str(self._lines)}
+        """Get connection options."""
+        return {
+            'server': self._server,
+            'port': self._port,
+            'ssl': 'on' if self._ssl else 'off',
+            'password': self._password,
+            'lines': str(self._lines),
+        }
diff --git a/qweechat/weechat/color.py b/qweechat/weechat/color.py
index 1fb72be..a777c71 100644
--- a/qweechat/weechat/color.py
+++ b/qweechat/weechat/color.py
@@ -127,7 +127,12 @@ class Color():
             return ''
 
     def _attrcode_to_char(self, code):
-        codes = {'\x01': '*', '\x02': '!', '\x03': '/', '\x04': '_'}
+        codes = {
+            '\x01': '*',
+            '\x02': '!',
+            '\x03': '/',
+            '\x04': '_',
+        }
         return codes.get(code, '')
 
     def _convert_color(self, match):
diff --git a/qweechat/weechat/protocol.py b/qweechat/weechat/protocol.py
index 71fabd1..005a05d 100644
--- a/qweechat/weechat/protocol.py
+++ b/qweechat/weechat/protocol.py
@@ -88,9 +88,10 @@ class WeechatObject:
         return self._str_value(self.value)
 
     def __str__(self):
-        self._obj_cb = {'hda': self._str_value_hdata,
-                        'inl': self._str_value_infolist,
-                        }
+        self._obj_cb = {
+            'hda': self._str_value_hdata,
+            'inl': self._str_value_infolist,
+        }
         return '%s: %s' % (self.objtype,
                            self._obj_cb.get(self.objtype,
                                             self._str_value_other)())
@@ -130,19 +131,20 @@ class Protocol:
     """Decode binary message received from WeeChat/relay."""
 
     def __init__(self):
-        self._obj_cb = {'chr': self._obj_char,
-                        'int': self._obj_int,
-                        'lon': self._obj_long,
-                        'str': self._obj_str,
-                        'buf': self._obj_buffer,
-                        'ptr': self._obj_ptr,
-                        'tim': self._obj_time,
-                        'htb': self._obj_hashtable,
-                        'hda': self._obj_hdata,
-                        'inf': self._obj_info,
-                        'inl': self._obj_infolist,
-                        'arr': self._obj_array,
-                        }
+        self._obj_cb = {
+            'chr': self._obj_char,
+            'int': self._obj_int,
+            'lon': self._obj_long,
+            'str': self._obj_str,
+            'buf': self._obj_buffer,
+            'ptr': self._obj_ptr,
+            'tim': self._obj_time,
+            'htb': self._obj_hashtable,
+            'hda': self._obj_hdata,
+            'inf': self._obj_info,
+            'inl': self._obj_infolist,
+            'arr': self._obj_array,
+        }
 
     def _obj_type(self):
         """Read type in data (3 chars)."""
@@ -260,11 +262,12 @@ class Protocol:
                 item[key] = self._obj_cb[objtype]()
             item['__path'] = pointers
             items.append(item)
-        return {'path': list_path,
-                'keys': dict_keys,
-                'count': count,
-                'items': items,
-                }
+        return {
+            'path': list_path,
+            'keys': dict_keys,
+            'count': count,
+            'items': items,
+        }
 
     def _obj_info(self):
         """Read an info in data."""
@@ -286,7 +289,10 @@ class Protocol:
                 var_value = self._obj_cb[var_type]()
                 variables[var_name] = var_value
             items.append(variables)
-        return {'name': name, 'items': items}
+        return {
+            'name': name,
+            'items': items
+        }
 
     def _obj_array(self):
         """Read an array of values in data."""