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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 read_entry(self):
 """get the next value from the array, and set internal iterator so next call will be next entry :return: The next GenomicRange entry :rtype: GenomicRange """

    if len(self.bedarray) <= self.curr_ind: return None
    val = self.bedarray[self.curr_ind]
    self.curr_ind += 1
    return val