Question

Hi I am using C++ and I have written a wrapper in python. Here is a snippet of my code.

for day in Times:
    for item in day.data():
       print "%d: %d-%d" % (day.key(), item.key(), item.data() )

Is there any way in which I can short circuit this so I can do.

print Times[0].data()[0].key()

Answer 1

Is there any way in which I can short circuit this so I can do.

Not necessarily.

In for day in Schedule: the value of day is not an index from 0 to len(Schedule). Day is the first element in the Schedule collection.

Without knowing what kind of collection Schedule is, it’s impossible to say what index scheme would get the “first” item from the collection.

If Schedule is a set, for example, you can do something like Schedule.pop() to get the first element that would have been assigned to day. But that has a side-effect of updating Schedule, so it’s not really going to work.

If Schedule is a dictionary, then, you can try something like Schedule.key()[0] to get the first value that would have been assigned to day.

If Schedule is a sequence, then day should be equal to Schedule[0].