CODEWITHSUNDEEP
pythonpython-2.7
r0u1i
r0u1i

Reputation: 3566

subclassing Python's datetime.time

For whatever reason, I want to subclass datetime.time so that the subclass can be initialized by another datetime.time object. This sadly doesn't work:

class MyTime(datetime.time):
    def __init__(self, t):
        super().__init__(t.hour, t.minute, t.second, t.microsecond)

>>> t=datetime.time(10,20,30,400000)
>>> MyTime(t)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: an integer is required

obviously I'm doing something stupid, but what is it?

Upvotes: 2

Views: 508

Answers (1)

glglgl
glglgl

Reputation: 91017

  1. super() doesn't work as is in Python 2.x. You want to use super(MyTime, self) instead.

  2. You'll have to override __new__ instead of __init__ in this case:

    class MyTime(datetime.time):
    def __new__(cls, t):
        return datetime.time.__new__(cls, t.hour, t.minute, t.second, t.microsecond)

print MyTime(datetime.time(10,20,30,400000))

    prints

    10:20:30.400000

Upvotes: 3

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