length of a tuple or a list containing only one element

TP Tribulations at Paralleles.invalid
Mon Nov 3 12:08:28 CET 2008

Hi everybody,

I have a question about the difference of behavior of "len" when applied on
tuples or on lists. I mean:

$ len( ( 'foo', 'bar' ) )
$ len( ( 'foo' ) )
$ len( [ 'foo', 'bar' ] )
$ len( [ 'foo' ] )

Why this behavior for the length computation of a tuple?
For my application, I prefer the behavior of length for a list. If I want to
store some values in a tuple because they should not be modified, the case
where the tuple contains only one element bothers me.


python -c "print ''.join([chr(154 - ord(c)) for c in '*9(9&(18%.9&1+,\'Z

"When a distinguished but elderly scientist states that something is
possible, he is almost certainly right. When he states that something is
impossible, he is very probably wrong." (first law of AC Clarke)

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