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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 countok(self):
 """ Boolean array showing which stars pass all count constraints. A "count constraint" is a constraint that affects the number of stars. """

        ok = np.ones(len(self.stars)).astype(bool)
        for name in self.constraints:
            c = self.constraints[name]
            if c.name not in self.selectfrac_skip:
                ok &= c.ok
        return ok