diff --git a/Level_06/progress.py b/Level_06/progress.py
index 6243742..111d0e7 100755
--- a/Level_06/progress.py
+++ b/Level_06/progress.py
@@ -9,7 +9,7 @@
     pass
 
 print("unbekannte Länge:")
-for x in tqdm((x for x in range(25000000))):
+for x in tqdm(x for x in range(25000000)):
     pass
 
 print("grafisch:")
diff --git a/Level_08/generatoren.py b/Level_08/generatoren.py
index c562d8e..cb4ad36 100755
--- a/Level_08/generatoren.py
+++ b/Level_08/generatoren.py
@@ -5,6 +5,7 @@ def gen(s):
     for char in s:
         yield char
 
+
 # iterieren mit einer for-Schleife:
 for x in gen("abcdef"):
     print(x)
@@ -24,14 +25,17 @@ def f(x):
 # IN: f(3)
 # OUT: 9
 
+
 def dec(func):
     def inner_func(*args):
         print(args)
         r = func(*args)
         print("Return: {}".format(r))
         return r
+
     return inner_func
 
+
 @dec
 def f(x):
     return x**2
diff --git a/Level_08/map.py b/Level_08/map.py
index 2c0124e..c84dc2f 100755
--- a/Level_08/map.py
+++ b/Level_08/map.py
@@ -38,6 +38,6 @@ def even(n):
 # lambda
 print(list(filter(lambda x: x % 2 == 0, r)))
 
-print(all((even(x) for x in even_numbers)))
+print(all(even(x) for x in even_numbers))
 
 # für mehr Spaß mit Generatoren: https://docs.python.org/3/library/itertools.html
\ No newline at end of file
diff --git a/Level_08/with.py b/Level_08/with.py
index 3470d63..2525f3d 100755
--- a/Level_08/with.py
+++ b/Level_08/with.py
@@ -10,7 +10,7 @@
 
 # Dateien öffnen
 
-with open("../Level_04/loremipsum.txt", "r") as lorem:
+with open("../Level_04/loremipsum.txt") as lorem:
     print(lorem.read())
 
 # Exceptions ignorieren
diff --git a/Level_10/label.py b/Level_10/label.py
index fc6733a..d61ab02 100755
--- a/Level_10/label.py
+++ b/Level_10/label.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# coding: utf-8
 
 # Level 9: Ein Label in einem Fenster.