Improving Python (was: Lambda going out of fashion)

Fredrik Lundh fredrik at pythonware.com
Mon Dec 27 09:50:36 CET 2004


Dima Dorfman wrote:

> I happen to not mind the ''.join syntax, but if I did, I would use
>
>  str.join('', seq)
>
> which is just like a join builtin except that it's not as easy to make
> it work on pre-string-method Pythons.

just like join, except that it isn't:

>>> string.join(seq, sep)
u'axbxc'
>>> sep.join(seq)
u'axbxc'
>>> str.join(sep, seq)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: descriptor 'join' requires a 'str' object but received a 'unicode'

</F> 






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