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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _update_port_locations(self, initial_coordinates):
 """Adjust port locations after particles have moved Compares the locations of Particles between 'self' and an array of reference coordinates. Shifts Ports in accordance with how far anchors have been moved. This conserves the location of Ports with respect to their anchor Particles, but does not conserve the orientation of Ports with respect to the molecule as a whole. Parameters initial_coordinates : np.ndarray, shape=(n, 3), dtype=float Reference coordinates to use for comparing how far anchor Particles have shifted. """

        particles = list(self.particles())
        for port in self.all_ports():
            if port.anchor:
                idx = particles.index(port.anchor)
                shift = particles[idx].pos - initial_coordinates[idx]
                port.translate(shift)