Follow pairs that have a direction

Predict the output · Medium · §4.6 A map of four containers

Who follows whom is written as (follower, followed) tuples and collected in a set. Predict the output without running the code.

Code

follows = {("dami", "yuna"), ("yuna", "dami"),
           ("dami", "yuna"), ("taeo", "dami")}
print(len(follows))
print(("yuna", "dami") in follows)
print(("dami", "taeo") in follows)

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