NumPy Boolean Masks Practice Problems question 14, why this answer isn't correct?

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My Code:

import numpy as np

# Write your function here
def has_perfect_score(grades):
    return (grades[grades==100].size >0)

# Uncomment to test
x = np.array([75, 67, 95, 100])

x = np.array([75, 67, 95, 99])

What I expected to happen:

What actually happened:

Function `has_perfect_score` did not return a value with the expected type. We expected `bool_` but got `bool` instead.

There is a numpy.bool_ which is different from Python’s bool. The function above returns bool, but the answer check wants numpy.bool_. The any and all numpy methods returns numpy.bool_.