在Django中使用SQLite3时出现“NULL result without error in PyObject_Call”错误。

查了很长时间，今天终于找到了答案：

http://code.google.com/p/modwsgi/wiki/ApplicationIssues

Python 'pysqlite' Symbol Conflict

Certain versions of 'pysqlite' module defined a global symbol 'cache_init'. This symbol clashes with a similarly named symbol present in the Apache mod_cache module. As a result of the clash, the two modules being loaded at the same time can cause the Apache process to crash or the following Python exception to be raised:

SystemError: NULL result without error in PyObject_Call

This problem is mentioned in pysqlite ticket #174 and the release notes for version 2.3.3 of pysqlite To avoid the problem upgrade to pysqlite 2.3.3 or later.

解决方法：

wget http://pysqlite.googlecode.com/files/pysqlite-2.6.3.tar.gz

tar zxvf pysqlite-2.6.3.tar.gz

cd pysqlite-2.6.3

python setup.py install

service httpd restart

问题解决。

如何仍有问题，可以尝试不用sqlite3模块，换用其它模块来操作SQLite。

try:

    import pysqlite2.dbapi2 as sqlite3

except ImportError:

    import sqlite3