in the float lesson it for division a single forward slash was used but in numeric operators it uses 2 forward slashes why??

Answer 1

The two forward slashes means that it divides the first operand by the second, and then rounds down. So 7 // 3 = 2.

Answer 2

They are unlike operators.

/ - performs float division, that is, if you use it with two integers, the result always will be an float. The result shows its decimal part.

For other hand, // operator, only returns the integer division part discarding the decimal part.

An example:

>>> 5/2
2.5
>>>4/2
2.0
>>>5//2
2
>>>4//2
2

Pay attention to the decimal point.