关于Centos Linux系统安装Python的问题

由于最近在研究Python框架Django的使用,安装django扩展没有问题

新建项目  django-admin startproject projectName  如果什么都不修改或者直接创建一个新的应用的时候就会报出sqlite3模块未安装的错误

Traceback (most recent call last):
File "/usr/local/python3/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 34, in <module>
from pysqlite2 import dbapi2 as Database
ImportError: No module named 'pysqlite2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/python3/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 36, in <module>
from sqlite3 import dbapi2 as Database
File "/usr/local/python3/lib/python3.5/sqlite3/__init__.py", line 23, in <module>
from sqlite3.dbapi2 import *
File "/usr/local/python3/lib/python3.5/sqlite3/dbapi2.py", line 27, in <module>
from _sqlite3 import *
ImportError: No module named '_sqlite3'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/python3/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
File "/usr/local/python3/lib/python3.5/site-packages/django/core/management/__init__.py", line 327, in execute
django.setup()
File "/usr/local/python3/lib/python3.5/site-packages/django/__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/usr/local/python3/lib/python3.5/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/usr/local/python3/lib/python3.5/site-packages/django/apps/config.py", line 202, in import_models
self.models_module = import_module(models_module_name)
File "/usr/local/python3/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 662, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/usr/local/python3/lib/python3.5/site-packages/django/contrib/auth/models.py", line 4, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/usr/local/python3/lib/python3.5/site-packages/django/contrib/auth/base_user.py", line 49, in <module>
class AbstractBaseUser(models.Model):
File "/usr/local/python3/lib/python3.5/site-packages/django/db/models/base.py", line 108, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/usr/local/python3/lib/python3.5/site-packages/django/db/models/base.py", line 299, in add_to_class
value.contribute_to_class(cls, name)
File "/usr/local/python3/lib/python3.5/site-packages/django/db/models/options.py", line 263, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/usr/local/python3/lib/python3.5/site-packages/django/db/__init__.py", line 36, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/usr/local/python3/lib/python3.5/site-packages/django/db/utils.py", line 212, in __getitem__
backend = load_backend(db['ENGINE'])
File "/usr/local/python3/lib/python3.5/site-packages/django/db/utils.py", line 116, in load_backend
return import_module('%s.base' % backend_name)
File "/usr/local/python3/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/usr/local/python3/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 39, in <module>
raise ImproperlyConfigured("Error loading either pysqlite2 or sqlite3 modules (tried in that order): %s" % exc)
django.core.exceptions.ImproperlyConfigured: Error loading either pysqlite2 or sqlite3 modules (tried in that order): No module named '_sqlite3'

最开始只是以为django框架的问题,或者是python需要安装一个扩展后来发现在python 的shell下 import sqlite3也会报错为

>>> import sqlite3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/python3/lib/python3.5/sqlite3/__init__.py", line 23, in <module>
from sqlite3.dbapi2 import *
File "/usr/local/python3/lib/python3.5/sqlite3/dbapi2.py", line 27, in <module>
from _sqlite3 import *
ImportError: No module named '_sqlite3'

和上面报错是一样的,之后发现原来是在系统中缺少了sqlite3的支持,

按照网上说的可以在sqlite官方下载sqlite3的安装然后把

python安装包下的setup.py文件的大约第(我用的是3.5.1)

# We hunt for #define SQLITE_VERSION "n.n.n"
1073 # We need to find >= sqlite version 3.0.8
1074 sqlite_incdir = sqlite_libdir = None
1075 sqlite_inc_paths = [ '/usr/include',
1076 '/usr/include/sqlite',
1077 '/usr/include/sqlite3',
1078 '/usr/local/include',
1079 '/usr/local/include/sqlite',
1080 '/usr/local/include/sqlite3',
1081 ]

大概就是要搜索sqlite的安装位置,在这里添加上一个列为你安装sqlite3的目录绝对路径

但是我在CentOS下使用 yum install sqlite* 命令安装

个人感觉主要是安装  sqlite-3.x.x 和 sqlite-devel  这两个包,不过用上面的也多站不了几M的空间就无所谓了

然后在编译安装python,如果是之前就安装过的,那么就重新编译安装一遍就可以了