How does `assertEqual` works in python?

Following statement passes in my tests.

self.assertEqual(3.3, np.asarray([3.3]))

One type is numpy.float64 other is numpy.ndarray and my assumption was that this test will fail but it passes.

Following statement prints [ True]

print(3.3 == np.asarray([3.3]))

Debugging further shows that assertEquals ends up invoking unittest.case.TestCase#_baseAssertEqual which checks equality using ==:

if not first == second:
        standardMsg = '%s != %s' % _common_shorten_repr(first, second)
        msg = self._formatMessage(msg, standardMsg)
        raise self.failureException(msg)

Can someone explain why and how test self.assertEqual(3.3, np.asarray([3.3])) passes?