[Tutor] (no subject)

[Matthew Herzog]

 elif fileDate = datetime.strptime(name[0:8], DATEFMT).date():
                   ^
SyntaxError: invalid syntax



On Sat, Mar 23, 2019 at 6:43 PM Mats Wichmann <mats at wichmann.us> wrote:

> On 3/23/19 3:16 AM, Peter Otten wrote:
>
> > Personally I would use a try...except clause because with that you can
> > handle invalid dates like 99999999_etc.xls gracefully. So
> >
> > ERASED = "erased_"
> >
> >
> > def strip_prefix(name):
> >     if name.startswith(ERASED):
> >         name = name[len(ERASED):]
> >     return name
> >
> >
> > def extract_date(name):
> >     datestr = strip_prefix(name)[:8]
> >     return datetime.datetime.strptime(datestr, DATEFMT).date()
> >
> >
> > for name in ...:
> >     try:
> >         file_date = extract_date(name)
> >     except ValueError:
> >         pass
> >     else:
> >         print(file_date)
>
> I'd endorse this approach as well.. with a DATEFMT of "%Y%m%d", you will
> get a ValueError for every date string that is not a valid date... which
> you then just ignore (the "pass"), since that's what you wanted to do.
>
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-- 
The plural of anecdote is not "data."