diff --git a/squirrelbattle/entities/friendly.py b/squirrelbattle/entities/friendly.py
index 1c94ed8..94b1b8a 100644
--- a/squirrelbattle/entities/friendly.py
+++ b/squirrelbattle/entities/friendly.py
@@ -54,31 +54,32 @@ class Sunflower(FriendlyEntity):
         """
         return [_("Flower power!!"), _("The sun is warm today")]
 
+
 class Familiar(FightingEntity):
     """
     A friendly familiar that helps the player defeat monsters.
     """
-    def __init__(self, maxhealth: int = 25, 
+    def __init__(self, maxhealth: int = 25,
                  *args, **kwargs) -> None:
-        super().__init__(*args, **kwargs)
+        super().__init__(maxhealth=maxhealth, *args, **kwargs)
         self.target = None
-    def act(self, p: Player, m : Map) :
+
+    def act(self, p: Player, m: Map) -> None:
         """
         By default, the familiar tries to stay at distance at most 2 of the
         player and if a monster comes in range 3, it focuses on the monster
         and attacks it.
         """
-        if self.target == None:
+        if self.target is None:
             self.target = p
         if self.target == p:
             for entity in m.entities:
-                if (self.y - entity.y) ** 2 + (self.x - entity.x) ** 2 <= 9 and \
+                if (self.y - entity.y) ** 2 + (self.x - entity.x) ** 2 <= 9 and\
                         isinstance(entity, Monster):
                     self.target = entity
-                    entity.paths = dict() #Allows the paths to be calculated.
+                    entity.paths = dict()  # Allows the paths to be calculated.
                     break
-            
-            
+
         # Familiars move according to a Dijkstra algorithm
         # that targets their target.
         # If they can not move and are already close to their target,
@@ -90,9 +91,9 @@ class Familiar(FightingEntity):
                 if moved:
                     break
                 if self.distance_squared(self.target) <= 1 and \
-                           not isinstance(self.target, Player):
+                        not isinstance(self.target, Player):
                     self.map.logs.add_message(self.hit(self.target))
-                    if self.target.dead :
+                    if self.target.dead:
                         self.target.paths = None
                         self.target = None
                     break
@@ -106,7 +107,8 @@ class Familiar(FightingEntity):
                 if move():
                     break
 
-class Trumpet(Familiar) :
+
+class Trumpet(Familiar):
     """
     A class of familiars.
     """
diff --git a/squirrelbattle/entities/monsters.py b/squirrelbattle/entities/monsters.py
index 87f643e..27c96a6 100644
--- a/squirrelbattle/entities/monsters.py
+++ b/squirrelbattle/entities/monsters.py
@@ -60,13 +60,15 @@ class Monster(FightingEntity):
             for move in moves:
                 if move():
                     break
-    def move(self, y: int, x:int) -> None:
+
+    def move(self, y: int, x: int) -> None:
         """
         Overwrites the move function to recalculate paths.
         """
         super().move(y, x)
         self.recalculate_paths()
 
+
 class Tiger(Monster):
     """
     A tiger monster.
diff --git a/squirrelbattle/entities/player.py b/squirrelbattle/entities/player.py
index 5f389cf..b5e146b 100644
--- a/squirrelbattle/entities/player.py
+++ b/squirrelbattle/entities/player.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from random import randint
-from typing import Dict, Tuple
 
 from ..interfaces import FightingEntity, InventoryHolder
 
diff --git a/squirrelbattle/interfaces.py b/squirrelbattle/interfaces.py
index 0fec4d0..75b49ca 100644
--- a/squirrelbattle/interfaces.py
+++ b/squirrelbattle/interfaces.py
@@ -63,9 +63,9 @@ class Map:
         """
         Registers a new entity in the map.
         """
-        if entity.is_familiar() :
-            self.entities.insert(1,entity)
-        else :
+        if entity.is_familiar():
+            self.entities.insert(1, entity)
+        else:
             self.entities.append(entity)
         entity.map = self
 
@@ -100,7 +100,8 @@ class Map:
     @staticmethod
     def load(filename: str) -> "Map":
         """
-        Reads a file that contains the content of a map, and builds a Map object.
+        Reads a file that contains the content of a map,
+        and builds a Map object.
         """
         with open(filename, "r") as f:
             file = f.read()
@@ -162,7 +163,7 @@ class Map:
         for entity in self.entities:
             if entity.is_familiar():
                 entity.act(p, self)
-            else :
+            else:
                 entity.act(self)
 
     def save_state(self) -> dict:
@@ -307,7 +308,7 @@ class Entity:
         Uses Dijkstra algorithm to calculate best paths for other entities to
         go to this entity. If self.paths is None, does nothing.
         """
-        if self.paths == None :
+        if self.paths is None:
             return
         distances = []
         predecessors = []
@@ -352,7 +353,7 @@ class Entity:
             self.paths[(y, x)] = [p for d, p in sorted(
                 [(distances[i][(y, x)], predecessors[i][(y, x)])
                  for i in range(len(distances)) if (y, x) in predecessors[i]])]
-    
+
     def act(self, m: Map) -> None:
         """
         Defines the action the entity will do at each tick.
@@ -422,7 +423,7 @@ class Entity:
         from squirrelbattle.entities.monsters import Tiger, Hedgehog, \
             Rabbit, TeddyBear
         from squirrelbattle.entities.friendly import Merchant, Sunflower, \
-             Trumpet
+            Trumpet
         return [BodySnatchPotion, Bomb, Heart, Hedgehog, Rabbit, TeddyBear,
                 Sunflower, Tiger, Merchant, Trumpet]
 
diff --git a/squirrelbattle/settings.py b/squirrelbattle/settings.py
index 3ff1be7..58e8cc1 100644
--- a/squirrelbattle/settings.py
+++ b/squirrelbattle/settings.py
@@ -13,7 +13,8 @@ from .translations import gettext as _
 class Settings:
     """
     This class stores the settings of the game.
-    Settings can be obtained by using for example settings.TEXTURE_PACK directly.
+    Settings can be obtained by using for example settings.TEXTURE_PACK
+    directly.
     The comment can be obtained by using settings.get_comment('TEXTURE_PACK').
     We can set the setting by simply using settings.TEXTURE_PACK = 'new_key'
     """