TP <[EMAIL PROTECTED]> writes:
> 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' ) )
> 2
> $ len( ( 'foo' ) )
> 3
> $ len( [ 'foo', 'bar' ] )
> 2
> $ len( [ 'foo' ] )
> 1
For making a literal tuple, parentheses are irrelevant; only the
commas matter:
>>> type( ('foo', 'bar') )
<type 'tuple'>
>>> type( ('foo',) )
<type 'tuple'>
>>> type( ('foo') )
<type 'str'>
However, for making a literal list, the brackets do matter:
>>> type( ['foo', 'bar'] )
<type 'list'>
>>> type( ['foo',] )
<type 'list'>
>>> type( ['foo'] )
<type 'list'>
--
\ “The way to build large Python applications is to componentize |
`\ and loosely-couple the hell out of everything.” —Aahz |
_o__) |
Ben Finney
--
http://mail.python.org/mailman/listinfo/python-list
