How to find difference in years between two dates?

[Bruno Desthuilliers]

thebjorn wrote:
> For the purpose of finding someone's age I was looking for a way to
> find how the difference in years between two dates, so I could do
> something like:
> 
>   age = (date.today() - born).year
> 
> but that didn't work (the timedelta class doesn't have a year
> accessor).
> 
> I looked in the docs and the cookbook, but I couldn't find anything, so
> I came up with:
> 
>   def age(born):
>       now = date.today()
>       birthday = date(now.year, born.month, born.day)
>       return now.year - born.year - (birthday > now and 1 or 0)
> 
> i.e. calculate the "raw" years first and subtract one if he hasn't had
> his birthday yet this year... It works, but I'd rather use a standard
> and generic approach if it exists...?

You may want to have a look at mxDatetime, which has a RelativeDateTime
type that seems to do what you want:
http://www.egenix.com/files/python/mxDateTime.html


-- 
bruno desthuilliers
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