diff --git a/10.py b/10.py
index ac7dec5..0b904aa 100644
--- a/10.py
+++ b/10.py
@@ -1,5 +1,6 @@
 import os
 
+
 class game():
   def __init__(self):
     self.secret_word = input('Skriv inn det hemmelige ordet: ')
@@ -8,15 +9,17 @@ class game():
     os.system('clear')
 
   def getWord(self):
-    return ''.join([('*' if (ch in self.lettersLeft) else ch) for ch in list(self.secret_word)])
+    return ''.join([('*' if (ch in self.lettersLeft) else ch)
+                    for ch in list(self.secret_word)])
 
   def removeLetterFromLettersLeft(self, letter):
-    self.lettersLeft = list(filter(lambda leftLetter: leftLetter != letter, self.lettersLeft))
+    self.lettersLeft = list(
+        filter(lambda leftLetter: leftLetter != letter, self.lettersLeft))
 
   def gameOver(self):
     print('Du har ingen liv igjen.')
     exit(0)
-  
+
   def gameWon(self):
     print(f'Gratulerer. Ordet var {self.secret_word}')
     exit(0)
@@ -41,13 +44,14 @@ class game():
       self.rightLetter(letter)
     else:
       self.wrongLetter(letter)
-  
+
   def loop(self):
     while True:
       os.system('clear')
       self.update()
       input("Trykk enter for å fortsette...")
 
+
 if __name__ == "__main__":
-    myGame = game()
-    myGame.loop()
\ No newline at end of file
+  myGame = game()
+  myGame.loop()
diff --git a/Exercise 3/11 - Doble lokker/11a.py b/Exercise 3/11 - Doble lokker/11a.py
index 6b28395..a7424c2 100644
--- a/Exercise 3/11 - Doble lokker/11a.py	
+++ b/Exercise 3/11 - Doble lokker/11a.py	
@@ -1,11 +1,11 @@
-
 def numberPyramid(length):
   for i in range(length):
     row = ''
-    for k in range(i+1):
+    for k in range(i + 1):
       row += f'{k+1} '
     print(row)
 
+
 def numberPyramidGenerator():
   currentList = ['1']
   while True:
@@ -16,11 +16,13 @@ def numberPyramidGenerator():
 def solutionWithForLoops(n):
   return numberPyramid(n)
 
+
 def solutionWithGenerator(n):
   myGenerator = numberPyramidGenerator()
   for i in range(n):
     print(next(myGenerator))
 
+
 if __name__ == "__main__":
-    n = int(input('n: '))
-    print(solutionWithForLoops(n))
\ No newline at end of file
+  n = int(input('n: '))
+  print(solutionWithForLoops(n))
diff --git a/Exercise 3/8.py b/Exercise 3/8.py
index 83eb2e1..c256f0e 100644
--- a/Exercise 3/8.py	
+++ b/Exercise 3/8.py	
@@ -1,14 +1,15 @@
 def fibonacciIterative(n):
   k1 = 0
   k2 = 1
-  for i in range(n-1):
+  for i in range(n - 1):
     previousK2 = k2
     k2 = k1 + k2
     k1 = previousK2
   return k1
 
-fibonacciSum = lambda n: sum([fibonacciIterative(i) for i in range(1, n+1)])
-fibonacciList = lambda n: [fibonacciIterative(i) for i in range(1, n+1)]
+
+fibonacciSum = lambda n: sum([fibonacciIterative(i) for i in range(1, n + 1)])
+fibonacciList = lambda n: [fibonacciIterative(i) for i in range(1, n + 1)]
 
 if __name__ == "__main__":
   n = int(input('n: '))
diff --git a/Exercise 3/9 - Alternerende sum/9a.py b/Exercise 3/9 - Alternerende sum/9a.py
index fe281ce..6f9cc1f 100644
--- a/Exercise 3/9 - Alternerende sum/9a.py	
+++ b/Exercise 3/9 - Alternerende sum/9a.py	
@@ -1,9 +1,13 @@
-
 def alternateSum(n):
-  positiveNumbers = [num**2 for num in [i for i in range(1,n+1) if i % 2 != 0]]
-  negativeNumbers = [-num**2 for num in [i for i in range(1,n+1) if i % 2 == 0]]
+  positiveNumbers = [
+      num**2 for num in [i for i in range(1, n + 1) if i % 2 != 0]
+  ]
+  negativeNumbers = [
+      -num**2 for num in [i for i in range(1, n + 1) if i % 2 == 0]
+  ]
   return sum(positiveNumbers + negativeNumbers)
 
+
 if __name__ == "__main__":
   n = int(input('n: '))
   print(alternateSum(n))
\ No newline at end of file
diff --git a/Exercise 3/9 - Alternerende sum/9b.py b/Exercise 3/9 - Alternerende sum/9b.py
index 44e45fd..4b33434 100644
--- a/Exercise 3/9 - Alternerende sum/9b.py	
+++ b/Exercise 3/9 - Alternerende sum/9b.py	
@@ -5,19 +5,23 @@ def AlternateNumberGenerator():
   while True:
     yield n
     n = n + (-counter**2 if isEven(counter) else counter**2)
-    counter+=1
+    counter += 1
+
 
 def alternateSumStopAt(k):
   numGen = AlternateNumberGenerator()
   previousN = None
   n = next(numGen)
   iterations = 0
-  while n<k:
+  while n < k:
     previousN = n
     n = next(numGen)
     iterations += 1
-  
-  print(f'Summen av tallene før summen blir større enn k er {previousN}. Antall iterasjoner: {iterations}')
+
+  print(
+      f'Summen av tallene før summen blir større enn k er {previousN}. Antall iterasjoner: {iterations}'
+  )
+
 
 if __name__ == "__main__":
   k = int(input('k: '))