Include more types of operators in Lesson 7 conditionals

[myatmo]

The lesson only mentions comparison operators, and it would be great for students to learn more about other types of operators as well. For example, including Identity Operators such as "is" and "is not", and Membership Operators such as "in" and "not in".

Eg. x = [10, 12.5, 'Unknown']
y = [10, 12.5, 'Unknown']
z = x
if x is y:
print('x and y are the same')
else:
print('x and y are different')

We can showcase why x and y are different even though they contain the same content and the difference between "is" and "==".