Practice if / else

Write a function classify_tempo(bpm) that receives an integer representing the beats per minute (BPM) of a song. It should return:

• "slow" if the BPM is less than 60,
• "moderate" if the BPM is between 60 and 120 inclusive,
• "fast" if the BPM is greater than 120.

Examples

classify_tempo(45)   # returns "slow"
classify_tempo(90)   # returns "moderate"
classify_tempo(150)  # returns "fast"