Python - Round to nearest 05

Question

Hvor can I en python do the following rounding:

Round to the nearest 05 decimal

7,97 -> 7,95

6,72 -> 6,70

31,06 -> 31,05

36,04 -> 36,

Answer 1

import numpy as np

for Roundup

df['a']=(df["a"]*2).apply(np.ceil)/2

for Round

df['a']=(df["a"]*2).apply(np.floor)/2

This is working with columns for roundup 0.5 using numpy...