无法在 Google App Engine 中导入 ctypes python 库

Question

我无法在生产 GAE 服务器上导入 ctypes，这导致我们的代码中断。看起来，urllib 和 urllib2 也依赖于这个库，但不知何故，可以通过控制台在生产环境中导入它们（例如，导航到 www.myapp.com/console）。这是功能还是错误？谢谢！

Python 2.5.2 (r252:60911, Mar 17 2011, 15:16:30) 
[GCC 4.3.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(Google App Engine/1.5.1)
>>> from lib import cloud
 Traceback (most recent call last):
  File "/base/data/home/apps/s~getprofound1/1-01.351465921648985319/console/app/models/console.py", line 170, in processSource
    exec bytecode in statement_module.__dict__
  File "<string>", line 1, in <module>
  File "/base/data/home/apps/s~getprofound1/1-01.351465921648985319/lib/cloud/__init__.py", line 102, in <module>
    from . import cloudconfig as cc
  File "/base/data/home/apps/s~getprofound1/1-01.351465921648985319/lib/cloud/cloudconfig.py", line 50, in <module>
    from .util import configmanager
  File "/base/data/home/apps/s~getprofound1/1-01.351465921648985319/lib/cloud/util/__init__.py", line 25, in <module>
    import ctypes
  File "/base/python_runtime/python_dist/lib/python2.5/ctypes/__init__.py", line 10, in <module>
    from _ctypes import Union, Structure, Array
ImportError: No module named _ctypes

Answer 1

ctypes 在 Python 2.5 运行时或当前 Python 2.7 运行时中不可用。有关详细信息，请参阅 knowledge base 和此 list 枚举白名单模块。