adds progress bar link

examples/ex_text_based_adventure_game.py

@@ -0,0 +1,45 @@
+answer = input("You're at a cross section. Do you go left or right?")
+if answer.startswith("l"):
+    answer = input("Down this hall you encounter a bear. Do you fight it?")
+    if answer.startswith("y"):
+        print("The bear counter attack! He kills you")
+        print("game over!")
+        exit(0)
+    elif answer.startswith("n"):
+        print("It's a friendly bear! He transforms into a wizard!")
+        answer = input("The wizard asks you if you know the meaning of life?")
+        if answer == "42":
+            print("He knods approuvingly and upgrades you to wizard status!")
+            print("You win!")
+            exit(0)
+        else:
+            print("He shakes his head in disbelief. You fool!")
+            print("game over!")
+    else:
+        print("that's not a valid choice...")
+        print("game over!")
+        exit(0)
+elif answer.startswith("r"):
+    answer = input("Down this hall you find some mushrooms. Do you eat them?")
+    if answer.startswith("n"):
+        print("You starve to dead...")
+        print("game over!")
+        exit(0)
+    elif answer.startswith("y"):
+        print("A wizard apprears out of thin air!")
+        answer = input("The wizard asks you if you know the meaning of life?")
+        if answer == "42":
+            print("He knods approuvingly and upgrades you to wizard status!")
+            print("You win!")
+            exit(0)
+        else:
+            print("He shakes his head in disbelief. You fool!")
+            print("game over!")
+    else:
+        print("that's not a valid choice...")
+        print("game over!")
+        exit(0)
+    pass
+else:
+    print("game over!")
+    exit(0)

learning_python3.md

@@ -583,6 +583,8 @@ TODO [db](https://opentdb.com/api_config.php)
 
 TODO add a countdown timer to the multiple choice game
 
+* how apt does it's [progress bar](https://mdk.fr/blog/how-apt-does-its-fancy-progress-bar.html)
+
 # GUI programming
 
 ## wxpython helloworld