Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #90375

Re: why would this print 'True'?

Show all headers | View raw

Nevermind - I found the answer.  I was trying this in ipython with pylab:

http://stackoverflow.com/questions/7491951/python-builtin-all-with-generators

Neal Becker wrote:

> from itertools import ifilter
> 
> if all (hasattr (b, 'test') for b in ifilter (lambda b: b < 10,
> [1,2,3,4])):
>     print 'True'
> 
> same result using filter instead of ifilter.
> 
> hasattr (b, 'test') where b is 1, 2, 3... should all be False.  So why
> does this print True?
> 
-- 
Those who fail to understand recursion are doomed to repeat it

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread

Thread

Re: why would this print 'True'? Neal Becker <ndbecker2@gmail.com> - 2015-05-11 08:58 -0400

csiph-web