code: def add(self, value):
          
          # If the value is out of bounds, bring it in bounds.
          value = int(value)
          if value < 10:
              value = 10
          if value > 600:
              value = 600
  
          # Add the value to the histogram's data dictionary.
          self._data.setdefault(value, 0)
          self._data[value] += 1
          self._len += 1
docs: Add the value to this histogram.
  
          Args:
              value (int): The value. Values outside of ``10 <= x <= 600``
                  will be raised to ``10`` or reduced to ``600``.