python - itertools 在 GAE 中不起作用？

Question

错误日志:

2011-12-05 14:56:01.211

<type 'exceptions.AttributeError'>: 'module' object has no attribute 'product'
Traceback (most recent call last):
  File "/base/data/home/apps/s~ellipt-test/1.355173855249110456/helloworld.py", line 494, in <module>
    F16 = field_elements(2, 4)
  File "/base/data/home/apps/s~ellipt-test/1.355173855249110456/helloworld.py", line 218, in field_elements
    result = list(itertools.product(*([range(p)]*n)))

有什么问题？在我的电脑上，脚本有效!

Answer 1

app engine docs说:

Your application can run in one of three runtime environments: […] a choice of Python 2.5 or the experimental Python 2.7.

我假设这意味着默认的 Python 是 2.5 版。

itertools.product()文档说:

New in version 2.6.

我不太熟悉 GAE，所以不确定您如何将您的应用切换为使用 2.7。