Returned value not defined

[somerandomguy123]

I tried to create a random leveling system for mobs in my game, however, when I tried to check the output of a returned value It shows un in the console as "Undefined". Does anyone know why and how to solve it? I am sorry if the function seems complicated.

def monsterpower():
    import random
    weakmonsterlevel = random.randrange(1, 10, 1)
    normalmonsterlevel = random.randrange(5, 20 ,1)
    strongmonsterlevel = random.randrange(10, 40, 1)
    bosslevel = random.randrange(20, 80,1)
    weakmonsterhealth = weakmonsterlevel*1 +10
    normalmonsterhealth = normalmonsterlevel*1 +10
    strongmonsterhealth = strongmonsterlevel*1 +10
    bosshealth = bosslevel*2 + 20
    weakmonsterdamage = 2
    normalmonsterdamage = 4
    strongmonsterdamage = 6
    bossdamage = 10
    return weakmonsterhealth, normalmonsterhealth, strongmonsterhealth, bosshealth, weakmonsterdamage, normalmonsterdamage, strongmonsterdamage, bossdamage

print(weakmonsterhealth)

This is the error I got when I tried to print a returned value

NameError: name 'weakmonsterhealth' is not defined

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oh I forgot to put this line in the paragraph, there is suppose to be

monsterpower()

before [python]print(weakmonsterhealth)[/p