Clean Code: Apply flake8-simplify to Python

Also flake8-comprehensions which was added to the CI

For flake8-simplify, there are a few false-positives,
e.g. https://github.com/MartinThoma/flake8-simplify/issues/115

30_Cube/python/cube.py

@@ -4,16 +4,21 @@
 # Converted from BASIC to Python by Trevor Hobson
 
 import random
+from typing import Tuple
 
 
-def mine_position():
-    mine = []
-    for _ in range(3):
-        mine.append(random.randint(1, 3))
-    return mine
+def mine_position() -> Tuple[int, int, int]:
+    return (random.randint(1, 3), random.randint(1, 3), random.randint(1, 3))
 
 
-def play_game():
+def parse_move(move: str) -> Tuple[int, int, int]:
+    coordinates = [int(item) for item in move.split(",")]
+    if len(coordinates) == 3:
+        return tuple(coordinates)  # type: ignore
+    raise ValueError
+
+
+def play_game() -> None:
     """Play one round of the game"""
 
     money = 500
@@ -21,10 +26,9 @@ def play_game():
     while True:
         mines = []
         for _ in range(5):
-            mine = []
             while True:
                 mine = mine_position()
-                if not (mine in mines or mine == [1, 1, 1] or mine == [3, 3, 3]):
+                if not (mine in mines or mine == (1, 1, 1) or mine == (3, 3, 3)):
                     break
             mines.append(mine)
         wager = -1
@@ -37,16 +41,12 @@ def play_game():
             except ValueError:
                 print("Please enter a number.")
         prompt = "\nIt's your move: "
-        position = [1, 1, 1]
+        position = (1, 1, 1)
         while True:
-            move = [-1, -1, -1]
-            while move == [-1, -1, -1]:
+            move = (-1, -1, -1)
+            while move == (-1, -1, -1):
                 try:
-                    coordinates = [int(item) for item in input(prompt).split(",")]
-                    if len(coordinates) == 3:
-                        move = coordinates
-                    else:
-                        raise ValueError
+                    move = parse_move(input(prompt))
                 except (ValueError, IndexError):
                     print("Please enter valid coordinates.")
             if (
@@ -58,14 +58,14 @@ def play_game():
                 money = money - wager
                 break
             elif (
-                not move[0] in [1, 2, 3]
-                or not move[1] in [1, 2, 3]
-                or not move[2] in [1, 2, 3]
+                move[0] not in [1, 2, 3]
+                or move[1] not in [1, 2, 3]
+                or move[2] not in [1, 2, 3]
             ):
                 print("\nIllegal move. You lose")
                 money = money - wager
                 break
-            elif move == [3, 3, 3]:
+            elif move == (3, 3, 3):
                 print("\nCongratulations!")
                 money = money + wager
                 break
@@ -87,28 +87,32 @@ def play_game():
     print("\nGoodbye.")
 
 
-def main():
+def print_instructions():
+    print("\nThis is a game in which you will be playing against the")
+    print("random decisions of the computer. The field of play is a")
+    print("cube of side 3. Any of the 27 locations can be designated")
+    print("by inputing three numbers such as 2,3,1. At the start,")
+    print("you are automatically at location 1,1,1. The object of")
+    print("the game is to get to location 3,3,3. One minor detail:")
+    print("the computer will pick, at random, 5 locations at which")
+    print("it will plant land mines. If you hit one of these locations")
+    print("you lose. One other detail: You may move only one space")
+    print("in one direction each move. For example: From 1,1,2 you")
+    print("may move to 2,1,2 or 1,1,3. You may not change")
+    print("two of the numbers on the same move. If you make an illegal")
+    print("move, you lose and the computer takes the money you may")
+    print("have bet on that round.\n")
+    print("When stating the amount of a wager, print only the number")
+    print("of dollars (example: 250) you are automatically started with")
+    print("500 dollars in your account.\n")
+    print("Good luck!")
+
+
+def main() -> None:
     print(" " * 34 + "CUBE")
     print(" " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n")
     if input("Do you want to see the instructions ").lower().startswith("y"):
-        print("\nThis is a game in which you will be playing against the")
-        print("random decisions of the computer. The field of play is a")
-        print("cube of side 3. Any of the 27 locations can be designated")
-        print("by inputing three numbers such as 2,3,1. At the start,")
-        print("you are automatically at location 1,1,1. The object of")
-        print("the game is to get to location 3,3,3. One minor detail:")
-        print("the computer will pick, at random, 5 locations at which")
-        print("it will plant land mines. If you hit one of these locations")
-        print("you lose. One other detail: You may move only one space")
-        print("in one direction each move. For example: From 1,1,2 you")
-        print("may move to 2,1,2 or 1,1,3. You may not change")
-        print("two of the numbers on the same move. If you make an illegal")
-        print("move, you lose and the computer takes the money you may")
-        print("have bet on that round.\n")
-        print("When stating the amount of a wager, print only the number")
-        print("of dollars (example: 250) you are automatically started with")
-        print("500 dollars in your account.\n")
-        print("Good luck!")
+        print_instructions()
 
     keep_playing = True
     while keep_playing: