On Fri, 22 Aug 2008 15:44:15 -0700 (PDT), defn noob wrote:
> def letters():
> a = xrange(ord('a'), ord('z')+1)
> B = xrange(ord('A'), ord('Z')+1)
> while True:
> yield chr(a)
> yield chr(B)
>
>
>>>> l = letters()
>>>> l.next()
>
> Traceback (most recent call last):
> File "<pyshell#225>", line 1, in <module>
> l.next()
> File "<pyshell#223>", line 5, in letters
> yield chr(a)
> TypeError: an integer is required
>>>>
The error you're seeing is a result of passing
non-integer to chr() function, it has nothing to do
with generators:
>>> chr([])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: an integer is required
>>>
I have simplified your code a bit:
-------------
import string
def letters():
a, B = (string.letters,) * 2
for i in zip(a, B):
yield i[0]
yield i[1]
l = letters()
print l.next()
print l.next()
print l.next()
--------------
and the output:
$ python genlet.py
a
a
b
$
Is that what you tried to achieve?
--
Regards,
Wojtek Walczak,
http://tosh.pl/gminick/
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