In <[EMAIL PROTECTED]>, Basilisk96
wrote:
> "Terry Reedy" <[EMAIL PROTECTED]> wrote:
>> Any what if 'filelist' is any iterable other than a string or list? Your
>> code is broken, and unnecessarily so. So I would call the parameter
>> 'files' and test for isinstance(files, str) #or basestring. And wrap if it
>> is.
>
> Can you give an example of such an iterable (other than a tuple)? I'd
> certainly like to fix my 'fix' to work for a more general case.
def iter_filenames(filename):
lines = open(filename, 'r')
for line in lines:
yield line.rstrip()
lines.close()
filenames = iter_filenames('files.txt')
Now `filenames` is an iterable over strings representing file names but
it's not a `list`. And it's easy to come up with iterables over strings
that produce the data themselves, for example by attaching a counter to a
basename, or extracting the names from XML files, fetching them from a
database etc.
Ciao,
Marc 'BlackJack' Rintsch
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