calculate the variance in python

main.py
import statistics

data = [1, 2, 3, 4, 5]
variance = statistics.variance(data)
print(variance)
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6 lines

main.py
import numpy as np

data = [1, 2, 3, 4, 5]
variance = np.var(data)
print(variance)
83 chars
6 lines

main.py
data = [1, 2, 3, 4, 5]
mean = sum(data) / len(data)
variance = sum((x - mean) ** 2 for x in data) / len(data)
print(variance)
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5 lines