我正在学习django教程,很多人都问过这个问题,但我认为我的情况有点特殊,因为在安装python mysql之后,当我尝试执行python manage.py syncdb时,仍然会遇到这个错误
由于我使用macports来管理python安装,所以我使用virtualenv创建了virtualenv
virtualenv code/vdjango --no-site-packages --python=/opt/local/bin/python
在此之前,我使用macports安装djangopy27-django
,但是在创建virtualenv之后,我认为最好将django安装到virtualenv上,所以我使用了pip install django==1.5
根据django教程,我编辑了settings.py文件,然后执行python manage.py syncdb,最后出现以下错误:
[~/code/vdjango/newsite]$python manage.py syncdb
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/__init__.py", line 453, in execute_from_command_line
utility.execute()
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/__init__.py", line 272, in fetch_command
klass = load_command_class(app_name, subcommand)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/__init__.py", line 77, in load_command_class
module = import_module('%s.management.commands.%s' % (app_name, name))
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 8, in <module>
from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/core/management/sql.py", line 9, in <module>
from django.db import models
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/db/__init__.py", line 40, in <module>
backend = load_backend(connection.settings_dict['ENGINE'])
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/db/__init__.py", line 34, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/db/utils.py", line 93, in __getitem__
backend = load_backend(db['ENGINE'])
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/db/utils.py", line 27, in load_backend
return import_module('.base', backend_name)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/django/db/backends/mysql/base.py", line 17, in <module>
raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: dlopen(/Users/mac-pro/code/vdjango/lib/python2.7/site-packages/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib
Referenced from: /Users/mac-pro/code/vdjango/lib/python2.7/site-packages/_mysql.so
Reason: image not found
为了确认我已经安装了python mysql包,我再次运行了pip安装
(vdjango)mac-pro@localhost:[~/code/vdjango/newsite]$pip install python-mysqldb
Downloading/unpacking python-mysqldb
Could not find any downloads that satisfy the requirement python-mysqldb
No distributions at all found for python-mysqldb
Storing complete log in /Users/mac-pro/.pip/pip.log
那这里发生了什么?看起来我已经有了进一步学习本教程所需的一切,但是有些python/django抱怨没有mysqldb。
我的libmysqlclient.18.dylib位于/usr/local/mysql/lib/中,但我的系统在/usr/lib/中查找它。最后,我在/usr/lib中创建了libmysqlclient.18.dylib的符号链接,解决了这个问题。
1.)确保libmysqlclient.18.dylib存在于/usr/local/mysql/lib/
打开你的外壳。
您应该看到文件:
如果没有,请在系统中搜索文件的位置:
2.)在/usr/lib中创建libmysqlclient.18.dylib的符号链接
在shell中输入以下命令:
如果libmysqlclient.18.dylib文件不在/usr/local/mysql/lib中,请将第一个路径替换为libmysqlclient.18.dylib的正确路径。
希望能有所帮助。
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