Danny does not like rote learning (nor do we!). He is asked to remember multiplication tables of considerable size π

Can you give him a hand so he can focus on more interesting things again? (OK maybe HE is the one who should learn Python π)

Complete the

`MultiplicationTable class`

below implementing the following methods:

- Use
`__init__`

(constructor) to store the (x,y) coordinates and their multiplication result in a data structure (say in`self._table`

).`__len__`

should return the area of the table (len x* len y)`__str__`

should give a visual representation of the table, for example a 3x3 length table should return thisstr:1 | 2 | 3 2 | 4 | 6 3 | 6 | 9- The
`calc_cell`

method should take a x and y coordinate and return the result multiplying them. If x/y are out of range, raise an`IndexError`

.Good luck and have fun!

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