How to initialize a table of months.

Paul McGuire ptmcg at austin.rr.com
Mon Apr 16 07:14:32 CEST 2007


On Apr 15, 10:33 pm, "7stud" <bbxx789_0... at yahoo.com> wrote:
> On Apr 15, 9:30 pm, "7stud" <bbxx789_0... at yahoo.com> wrote:
>
> > On Apr 15, 7:30 pm, "Steven W. Orr" <ste... at syslang.net> wrote:
>
> Arrgh.
>
> import calendar
>
> months = calendar.month_abbr
> #returns an array with the 0 element empty
> #so the month names line up with the indexes 1-12
>
> d = {}
> for i in range(1, 13):
>     d[months[i]] = i
>
> print d

This dict construction idiom is worth learning:
d = dict( (a,b) for a,b in ... some kind of list comprehension or
generator expr... )

In this case:
d = dict( (mon,i) for i,mon in enumerate(calendar.month_abbr) )

Or to avoid including that pesky 0'th blank element:
d = dict( [(mon,i) for i,mon in enumerate(calendar.month_abbr)][1:] )

-- Paul





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