How to run foresight?

i want to run a example
`
$ python predict_captcha.py
`
but it doesn't work:
`
Traceback (most recent call last):
File "predict_captcha.py", line 12, in
from foresight.php import rand
File "build/bdist.linux-x86_64/egg/foresight/php/rand.py", line 6, in
File "/usr/local/lib/python2.7/dist-packages/foresight-0.1-py2.7.egg/foresight/glibc/random.py", line 82
yield from gen
SyntaxError: invalid syntax
`
can you tell me how to run this in the right way?