我尝试使用 Appengine SDK 版本 1.7.6，但收到致命错误（如下所述），因此恢复到 1.7.5，我的应用程序运行良好。但是，当我尝试在 1.7.5 中运行实验性 devappserver 时，我在 1.7.6 中看到的错误再次出现。我在 win 7 机器上运行 Python 2.7。AppEngine 的标准安装选择。
这些错误消息涉及与 PYTHON_EGG_CACHE 相关的权限，但是... - 1) 它们不会发生在“旧”dev_appserver 上 - 2) 应用程序可以成功地将文件提取到指定的位置。实际上，我将 PYTHON_EGG_CACHE 的路径更改为另一个位置，赋予它完全开放的权限，但仍然收到错误。- 3) 我的站点包中有 pyyaml，所以我不确定它为什么需要临时提取。
任何寻求解决此问题的帮助将不胜感激，因为我将被迫在几个发布时间内使用新的 devappserver。
下面的命令行错误转储：
python "C:\Program Files (x
86)\Google\google_appengine\devappserver2.py" .
WARNING 2013-03-25 19:10:41,029 devappserver2.py:497] devappserver2.py is curre
ntly experimental but will eventually replace dev_appserver.py in the App Engine
Python SDK. For more information and to report bugs, please see: http://code.go
ogle.com/p/appengine-devappserver2-experiment/
INFO 2013-03-25 19:10:41,171 appcfg.py:618] Checking for updates to the SDK.
WARNING 2013-03-25 19:10:44,525 simple_search_stub.py:975] Could not read searc
h indexes from c:\users\ben\appdata\local\temp\appengine.dev~upskillme-main.Ben\
search_indexes
INFO 2013-03-25 19:10:44,539 api_server.py:148] Starting API server at: http
://localhost:49302
INFO 2013-03-25 19:10:44,555 dispatcher.py:96] Starting server "default" run
ning at: http://localhost:8080
INFO 2013-03-25 19:10:44,571 admin_server.py:112] Starting admin server at:
http://localhost:8000
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\_python_runtime.py", line
150, in <module>
run_file(__file__, globals())
File "C:\Program Files (x86)\Google\google_appengine\_python_runtime.py", line
146, in run_file
execfile(script_path, globals_)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\de
vappserver2\python\runtime.py", line 39, in <module>
from google.appengine.ext.remote_api import remote_api_stub
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\remo
te_api\remote_api_stub.py", line 75, in <module>
import yaml
File "C:\Program Files (x86)\Google\google_appengine\lib\yaml-3.10\yaml\__init
__.py", line 14, in <module>
from cyaml import *
File "C:\Program Files (x86)\Google\google_appengine\lib\yaml-3.10\yaml\cyaml.
py", line 5, in <module>
from _yaml import CParser, CEmitter
File "C:\Python27\lib\site-packages\pyyaml-3.10-py2.7-win32.egg\_yaml.py", lin
e 7, in <module>
File "C:\Python27\lib\site-packages\pyyaml-3.10-py2.7-win32.egg\_yaml.py", lin
e 4, in __bootstrap__
File "C:\Python27\lib\site-packages\pkg_resources.py", line 882, in resource_f
ilename
self, resource_name
File "C:\Python27\lib\site-packages\pkg_resources.py", line 1351, in get_resou
rce_filename
self._extract_resource(manager, self._eager_to_zip(name))
File "C:\Python27\lib\site-packages\pkg_resources.py", line 1406, in _extract_
resource
manager.extraction_error() # report a user-friendly error
File "C:\Python27\lib\site-packages\pkg_resources.py", line 928, in extraction
_error
raise err
pkg_resources.ExtractionError: Can't extract file(s) to egg cache
The following error occurred while trying to extract file(s) to the Python egg
cache:
[Error 5] Access is denied: 'C:\\Users\\Ben\\AppData\\Roaming\\Python-Eggs\\py
yaml-3.10-py2.7-win32.egg-tmp\\_yaml.pyd'
The Python egg cache directory is currently set to:
C:\Users\Ben\AppData\Roaming\Python-Eggs
Perhaps your account does not have write access to this directory? You can
change the cache directory by setting the PYTHON_EGG_CACHE environment
variable to point to an accessible directory.
Exception in thread Thread-4:
Traceback (most recent call last):
File "C:\Python27\lib\threading.py", line 551, in __bootstrap_inner
self.run()
File "C:\Python27\lib\threading.py", line 504, in run
self.__target(*self.__args, **self.__kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\de
vappserver2\server.py", line 1045, in _loop_adjusting_instances
self._adjust_instances()