Hints

1. Create the Alien Class

Remember that object methods are always passed self as the first parameter.
Remember the double underscores on both sides of __init__().
Instance variables are unique to the class instance (object) that possesses them.
Class variables are the same across all instances of a class.

2. The `hit` Method

Remember that object methods are always passed self as the first parameter.
You can choose to allow the Alien's health to fall below zero, or require that it does not.

3. The `is_alive` Method

Remember that object methods are always passed self as the first parameter.
0 may not be the only 'dead' condition, depending on how hit() is implemented.

4. The `teleport` Method

Remember that object methods are always passed self as the first parameter.
Instance attributes can be updated from a method by using self.<attribute> = <new attribute value>.

5. The `collision_detection` Method

Remember that object methods are always passed self as the first parameter.
This method seems like an excellent place to use some kind of placeholder…

6. Alien Counter

Class attributes are the same across all instances of a class.
Ideally, this counter would increment whenever someone made an new Alien.
Class attributes can be changed from an instance method by using the class name: Alien.<class attribute name>.
__init__() is considered an instance method since it initializes a new object.

7. Object Creation

A tuple would be a single parameter.
The Alien constructor takes 2 parameters.
Unpacking what is inside the tuple would yield two parameters.
The standalone function is outside of the class