diff --git a/demo_code.py b/demo_code.py
index 68313e68b..6db8b7c00 100644
--- a/demo_code.py
+++ b/demo_code.py
@@ -5,11 +5,11 @@
 import subprocess
 import ssl
 
-
 # from django.db.models.expressions import RawSQL
 
 AWS_SECRET_KEY = "d6s$f9g!j8mg7hw?n&2"
 
+
 class BaseNumberGenerator:
     """Declare a method -- `get_number`."""
 
@@ -44,6 +44,7 @@ def get_number(self, min_max=[1, 10]):
 
 class ImaginaryNumber:
     """Class to represent an imaginary number."""
+
     def __init__(self):
         self.real = 0
         self.imaginary = 1
@@ -61,8 +62,7 @@ def main(options: dict = {}) -> str:
 
     if type(value) != str:
         raise Exception()
-    else:
-        value = iter(value)
+    value = iter(value)
 
     sorted(value, key=lambda k: len(k))
 
@@ -91,18 +91,12 @@ def tar_something():
 
 
 def bad_isinstance(initial_condition, object, other_obj, foo, bar, baz):
-    if (
-        initial_condition
-        and (
-            isinstance(object, int)
-            or isinstance(object, float)
-            or isinstance(object, str)
-        )
-        and isinstance(other_obj, float)
-        and isinstance(foo, str)
-        or (isinstance(bar, float) or isinstance(bar, str))
-        and (isinstance(baz, float) or isinstance(baz, int))
-    ):
+    if (initial_condition and
+        (isinstance(object, int) or isinstance(object, float)
+         or isinstance(object, str)) and isinstance(other_obj, float)
+            and isinstance(foo, str)
+            or (isinstance(bar, float) or isinstance(bar, str)) and
+        (isinstance(baz, float) or isinstance(baz, int))):
         pass
 
 
@@ -128,11 +122,13 @@ def chained_comparison():
     c = 3
     return a < b and b < c
 
+
 def wrong_callable():
     number = ImaginaryNumber()
-    if hasattr(number, '__call__'):
+    if hasattr(number, "__call__"):
         return number()
 
+
 if __name__ == "__main__":
     args = ["--disable", "all"]
     for i in range(len(args)):