Infinity has an interesting behavior on division operations. S | Python etc

Infinity has an interesting behavior on division operations. Some of them are expected, some of them are surprising. Without further talking, there is a table:

truediv (/)
| -8 | 8 | -inf | inf
-8 | 1.0 | -1.0 | 0.0 | -0.0
8 | -1.0 | 1.0 | -0.0 | 0.0
-inf | inf | -inf | nan | nan
inf | -inf | inf | nan | nan

floordiv (//)
| -8 | 8 | -inf | inf
-8 | 1 | -1 | 0.0 | -1.0
8 | -1 | 1 | -1.0 | 0.0
-inf | nan | nan | nan | nan
inf | nan | nan | nan | nan

mod (%)
| -8 | 8 | -inf | inf
-8 | 0 | 0 | -8.0 | inf
8 | 0 | 0 | -inf | 8.0
-inf | nan | nan | nan | nan
inf | nan | nan | nan | nan

The code used to generate the table:

import operator
cases = (-8, 8, float('-inf'), float('inf'))
ops = (operator.truediv, operator.floordiv, operator.mod)
for op in ops:
print(op.__name__)
row = ['{:4}'.format(x) for x in cases]
print(' ' * 6, ' | '.join(row))
for x in cases:
row = ['{:4}'.format(x)]
for y in cases:
row.append('{:4}'.format(op(x, y)))
print(' | '.join(row))