How to use set.intersection in an if-statement?

I want to check if multiple strings are within a larger string called "str_a". The following is what I currently have and it works.

animals = {"giraffe", "tiger"}
str_a = "A giraffe is taller than a tiger."

if "giraffe" in str_a or "tiger" in f:
    print ("T")
else:
    print ("F")

However, I wanted to represent the if-statement in a more concise manner and I think set.intersection can help me achieve that. I tried the following with set.intersection and it prints out "F" instead of "T" – I’m not sure why. Any guidance on this would be appreciated!

animals = {"giraffe", "tiger"}
str_a = "A giraffe is taller than a tiger."
matches = animals.intersection(str_a)

if matches:
    print ("T")
else:
    print ("F")

>Solution :

You should instead use any:

if any(animal in str_a for animal in animals):
    print('T')
else:
    print('F'