I saw this in someone's code:
y = img_index // num_images
where img_index
is a running index and num_images
is 3.
When I mess around with //
in IPython, it seems to act just like a division sign (i.e. one forward slash). I was just wondering if there is any reason for having double forward slashes?
In Python 3, they made the /
operator do a floating-point division, and added the //
operator to do integer division (i.e. quotient without remainder); whereas in Python 2, the /
operator was simply integer division, unless one of the operands was already a floating point number.
In Python 2.X:
>>> 10/3
3
>>> # to get a floating point number from integer division:
>>> 10.0/3
3.3333333333333335
>>> float(10)/3
3.3333333333333335
In Python 3:
>>> 10/3
3.3333333333333335
>>> 10//3
3
For further reference, see PEP238.