On Sep 20, 8:54 pm, satoru <[EMAIL PROTECTED]> wrote: > On Sep 20, 6:35 pm, Aidan <[EMAIL PROTECTED]> wrote: > > > satoru wrote: > > > hi, all > > > i want to check if a variable is iterable like a list, how can i > > > implement this? > > > this would be one way, though I'm sure others exist: > > > if hasattr(yourVar, '__iter__'): > > # do stuff > > thank you,but this will miss out sequences like string just because it > doesn't have an attribute named '__iter__'
str objects have a __getitem__ attribute, as do other built-in sequence types: unicode, xrange, buffer. AFAIK if an object has no __iter__ but has a __getitem__, iter(obj) will create an iterator that calls obj.__getitem__(0), obj.__getitem__(1), etc until IndexError is raised. -- http://mail.python.org/mailman/listinfo/python-list
