CODEWITHSUNDEEP
pythondjango
yuvi
yuvi

Reputation: 18427

how to compare time spans in python?

Say I have 2 sets of time spans. So one is from 10:00 am to 12:00 pm, the other from 11:00 am to 13:00 pm, both on the same day. How can I easily calculate to find out if they overlap?

My code is irrelevant, but just for understanding the use case - I'm developing a Django app where I want to allow building some sort of schedule, something like this:

class TimeSpan(models.Model):
    start = models.DateTimeField()
    end   = models.DateTimeField()

class Worker(models.Model):
    name = models.CharField(max_length=100)
    limitations = models.ManyToManyField(TimeSpan)

Class Shift(models.Model):
    workers = models.ManyToManyField(Workers)
    timespan = models.ForeignKey(TimeSpan)

I need to be able to compare a TimeSpan object of shifts, with the limitations of each worker. What would be a good way to do that?

Upvotes: 2

Views: 308

Answers (1)

Iain Shelvington
Iain Shelvington

Reputation: 32244

The easiest way to find if two time ranges overlap is like so

overlap = span_1_start < span_2_end and span_1_end > span_2_start

Upvotes: 1

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