您需要确保您下载的 App Engine SDK 在您的 Python 路径中。您可以通过交互式运行 python 来检查 python 认为它的路径是什么:
$ python
>>> import sys
>>> sys.path
['', '/Library/Python/2.7/site-packages/mock-1.0.1-py2.7.egg', '/usr/local/lib/wxPython-2.9.5.0/lib/python2.7/site-packages', '/usr/local/lib/wxPython-2.9.5.0/lib/python2.7/site-packages/wx-2.9.5-osx_cocoa', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages', '/usr/local/lib/wxPython-2.9.5.0/lib/python2.7']
或者,您可以在运行时将 SDK 添加到 python 路径。例如,如果您下载并解压缩到 /home/username/google_appengine,您可以在脚本中修改您的 python 路径:
sys.path.append('/home/username/google_appengine')
import dev_appserver
dev_appserver.fix_sys_path()
from google.appengine.ext.webapp.util import run_wsgi_app