Basket players code

Question

Hello! im doing code to solve basket players question in python for data science course and when i run my code it say that my code is wrong but i think its correct one. could anyone enlighten me? here is my code
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players = [180, 172, 178, 185, 190, 195, 192, 200, 210, 190]
num = len(players)

mean = sum(players)/num

var = 0
for i in players:
var = var + (i - mean)**2
variance = var/(num-1)

std = variance**0.5

bottom_range = mean-std
upper_range = mean + std

print(std,mean,bottom_range, upper_range)
num_range_oneSTD = 0
for i in players:
if bottom_range < i < upper_range:
num_range_oneSTD += 1

print(num_range_oneSTD)
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Answer 1

variance = var/(num)

#print(std,mean,bottom_range, upper_range)