On 9/17/20 11:24 AM, William Pearson wrote:
> I am puzzled by the reason for this difference between lists and tuples.
>
> A list of with multiple strings can be reduced to a list with one string with
> the expected results:
>
> for n in ['first','second']:
> print n
>
> for n in ['first']:
> print n
>
> The first loop prints "first", "second", and the second prints "first".
>
> ====
>
> This is not true for a tuple:
>
> for n in ('first','second'):
> print n
>
> for n in ('first'):
> print n
>
>
> prints "first", "second" in the first case, but "f","i","r","s","t" in the
> second.
>
> Where is this inconsistency explained?
>
Parenthesis don't always make a tuple (and in fact aren't needed to make
them)
('first') is just the string value 'first', inside a set of parenthesis
to possible affect order of operations.
For 1 element tuples, you need a trailing comma, like ('first,) and in
many places it also could be just 'first',
just like your first example could be just for n in 'first', 'second':
--
Richard Damon
--
https://mail.python.org/mailman/listinfo/python-list
