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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 _entry_allocated_bitmap(self, entry_number):
 """Checks if a particular index is allocated. Args: entry_number (int):
 Index to verify Returns: bool: True if it is allocated, False otherwise. """

    index, offset = divmod(entry_number, 8)
    return bool(self._bitmap[index] & (1 << offset))