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dreamcode
dreamcode
Lesson
Practice · Type hints
  1. Predict
  2. Arrange
  3. Fill in
+20 XP on finish
PREDICT · READ BEFORE YOU WRITE

What does this program print?

Trace the program the way the computer would, then make your call before running anything.

def double(n: int) -> int:
    return n * 2

print(double("ab"))