Python 3.x rounding behavior

Question

I was just re-reading What’s New In Python 3.0 and it states:

The round() function rounding strategy and return type have changed. Exact halfway cas

Answer 1

Python 2 rounding behaviour in python 3.

Adding 1 at the 15th decimal places. Accuracy upto 15 digits.

round2=lambda x,y=None: round(x+1e-15,y)