<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def to_distribution_values(self, values):
 """ Returns numpy array of natural logarithms of ``values``. """

        with warnings.catch_warnings():
            warnings.simplefilter("ignore")
            # avoid RuntimeWarning: divide by zero encountered in log
            return numpy.log(values)