DjangoWeb 版本升级

Django版本升级中的Bug

• pip install django==2.2.2，不要直接就django2.2
• Did you install mysqlclient?
  在settings中，添加__init__.py

import pymysql
pymysql.install_as_MySQLdb()

• mysqlclient 1.3.13 or newer is required; you have 0.9.3.：修改django/db/backends/mysql/base.py

# if version < (1, 3, 13):
#     raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database.__version__)

• AUTH_USER_MODEL refers to model 'users.User' that has not been installed
• AttributeError: 'str' object has no attribute 'decode'
  修改site-packages/django/db/backends/mysql/operations.py

    def last_executed_query(self, cursor, sql, params):
        # With MySQLdb, cursor objects have an (undocumented) "_executed"
        # attribute where the exact query sent to the database is saved.
        # See MySQLdb/cursors.py in the source distribution.
        query = getattr(cursor, '_executed', None)
        if query is not None:
            query = query.encode(errors='replace')
        return query

Linux下的Python版本升级

-- 下载
wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz

-- 解压
tar  -xf    ***.gz

-- 编译
./configure && make && make install

-- 软链接
ln -s /usr/local/bin/python3.7 /usr/bin/python
ln -s /usr/local/bin/python3.7-config /usr/bin/python-config