Question

我正在使用Google App Engine和Google SQL Service，并希望使用

选项

dev_appserver.py --mysql_user = username myapp

为了使用本地MySQL数据库进行开发，以及在prod环境中使用SQL Service。

我安装了MySQLdb并正在运行：

/usr/bin>>python
Python 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
>>>

但是，当我运行dev_appserver命令时，出现以下错误：

zipimporter('/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.6-intel.egg', 'MySQLdb/')
ERROR    2011-09-12 09:34:53,541 rdbms_mysqldb.py:90] The rdbms API is not available because the MySQLdb library could not be loaded.

我已经确认MySQL_python-1.2.3-py2.7-macosx-10.6-intel.egg位于该位置（/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site -packages /）并且可以访问。

知道可能导致此错误的原因是什么？

下面提供了完整的堆栈跟踪信息：

/Users/eddieboyd>>dev_appserver.py --debug --mysql_user=mysql  eddiehelloworld
Warning: You are using a Python runtime (2.7) that is more recent than the production runtime environment (2.5). Your application may use features that are not available in the production environment and may not work correctly when deployed to production.
INFO     2011-09-12 09:34:53,290 appengine_rpc.py:159] Server: appengine.google.com
INFO     2011-09-12 09:34:53,304 appcfg.py:449] Checking for updates to the SDK.
DEBUG    2011-09-12 09:34:53,305 appengine_rpc.py:364] Sending HTTPS request:
POST /api/updatecheck?release=1.5.3&timestamp=1311108376&api_versions=%5B%271%27%5D HTTPS/1.1
Host: appengine.google.com
X-appcfg-api-version: 1
Content-type: application/octet-stream
User-agent: appcfg_py/1.5.3 Darwin/10.8.0 Python/2.7.2.final.0


INFO     2011-09-12 09:34:53,465 appcfg.py:466] The SDK is up to date.
WARNING  2011-09-12 09:34:53,465 datastore_file_stub.py:512] Could not read datastore data from /var/folders/++/++71vE++6+0++4RjPqRgNE+0Eyo/-Tmp-/dev_appserver.datastore
INFO     2011-09-12 09:34:53,478 py_zipimport.py:148] zipimporter('/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.6-intel.egg', 'MySQLdb/')
ERROR    2011-09-12 09:34:53,541 rdbms_mysqldb.py:90] The rdbms API is not available because the MySQLdb library could not be loaded.
ERROR    2011-09-12 09:34:53,541 dev_appserver_main.py:638] <type 'exceptions.NotImplementedError'>: Unable to find the MySQLdb library. Please see the SDK documentation for installation instructions.
DEBUG    2011-09-12 09:34:53,543 dev_appserver_main.py:640] Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_main.py", line 635, in main
    dev_appserver.SetupStubs(appinfo.application, **option_dict)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver.py", line 4668, in SetupStubs
    rdbms_mysqldb.connect(database='')
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/rdbms_mysqldb.py", line 96, in connect
    'Unable to find the MySQLdb library. Please see the SDK '
NotImplementedError: Unable to find the MySQLdb library. Please see the SDK documentation for installation instructions.

Answer 1

穷人的解决方案。

我添加了

“导入MySQLdb”

在dev_appserver.py中。

现在有效。

Answer 2

确保使用当前版本为1.6.2的AppEngine SDK的最新版本。

之后安装python mysql支持包：python-mysqldb。

Answer 3

也许您的系统没有所需的MySQL模块。在Fedora 16 64位上，我通过安装MySQL python模块解决了这个问题：

yum install MySQL-python

将MySQL与dev_appserver（Google App Engine）和Google SQL Service一起使用

3 个答案: