types_of_people = 10
x = f"There are {types_of_people} types of people."

binary = "binary"
d = "don't"
y = f"Those who know {binary} and those who {d}."

print(x)
print(y)

hilarious = False
joke_eval = "Isn't that joke so funny?! {}"

print(joke_eval.format(hilarious))
