ImportError: No module named _sqlite3

报错如下：

>>> import rpy2.robjects
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python27/lib/python2.7/site-packages/rpy2-2.8.5-py2.7-linux-x86_64.egg/rpy2/robjects/__init__.py", line 34, in <module>
    from rpy2.robjects.functions import Function, SignatureTranslatedFunction
  File "/usr/local/python27/lib/python2.7/site-packages/rpy2-2.8.5-py2.7-linux-x86_64.egg/rpy2/robjects/functions.py", line 5, in <module>
    from rpy2.robjects import help
  File "/usr/local/python27/lib/python2.7/site-packages/rpy2-2.8.5-py2.7-linux-x86_64.egg/rpy2/robjects/help.py", line 7, in <module>
    import sqlite3
  File "/usr/local/python27/lib/python2.7/sqlite3/__init__.py", line 24, in <module>
    from dbapi2 import *
  File "/usr/local/python27/lib/python2.7/sqlite3/dbapi2.py", line 28, in <module>
    from _sqlite3 import *
ImportError: No module named _sqlite3

 问题原因：

在系统中同时存在多个不同版本的python。当前系统是由python 2.6.6升级到python 2.7.13而来。

解决办法：

[root@localhost sqlite-autoconf-3150000]# find / -name _sqlite3.so
/usr/lib64/python2.6/lib-dynload/_sqlite3.so
[root@localhost sqlite-autoconf-3150000]# whereis python
python: /usr/bin/python /usr/bin/python2.6 /usr/lib/python2.6 /usr/lib64/python2.6 /usr/include/python2.6 /usr/share/man/man1/python.1.gz

[root@localhost sqlite-autoconf-3150000]# find / -name lib-dynload
/usr/lib64/python2.6/lib-dynload
/usr/local/python27/lib/python2.7/lib-dynload

[root@localhost sqlite-autoconf-3150000]# cp /usr/lib64/python2.6/lib-dynload/_sqlite3.so /usr/local/python27/lib/python2.7/lib-dynload
[root@localhost sqlite-autoconf-3150000]# python
Python 2.7.13 (default, Mar  9 2017, 04:32:58) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sqlite3
>>> import rpy2.robjects
>>> 
>>>