slice-based time

dumb.py

import datetime

class GetTime(type):
    def __getitem__(cls, item):
        if isinstance(item, slice):
            hours = item.stop if item.start is None else item.start
            minutes = item.stop if item.start is not None else 0
            seconds = item.step or 0
        elif isinstance(item, int):
            hours = item
            minutes = 0
            seconds = 0
        else:
            raise ValueError()
        return datetime.datetime.now().replace(hour=hours, minute=minutes, second=seconds, microsecond=0)

class Time(metaclass=GetTime):
    pass

print(Time[5])
print(Time[7:00])
print(Time[0:30])
print(Time[18:21:58])

# Outputs:
# 2017-10-03 05:00:00
# 2017-10-03 07:00:00
# 2017-10-03 00:30:00
# 2017-10-03 18:21:58