标签:关闭 where pip perl bytes query null python3 hub
可能是由于Django使用的MySQLdb库对Python3不支持,我们用采用了PyMySQL库来代替,导致出现各种坑,特别是执行以下2条命令的是时候:python manage.py makemigrations
or
python manage.py inspectdb
无聊你是否执行pip install mysqlclient安装的最新版的,都抛出:
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.3 or newer is required; you have 0.7.11.None
MD,LZ看到这错误太想骂人了,没办法采取网上的方法,注释大法!
找到Python安装路劲下的Python36-32\Lib\site-packages\django\db\backends\mysql\base.py文件
将文件中的如下代码注释(可能需先关闭pycharm IDE)
if version < (1, 3, 3):
raise ImproperlyConfigured("mysqlclient 1.3.3 or newer is required; you have %s" % Database.__version__)
对对对,py3默认str是unicode编码,通过encode方法编码成bytes类型,后者才有decode解码方法。
提示错误来源:Python36\lib\site-packages\django\db\backends\mysql\operations.py", line 149, in last_executed_query
源方法内容(pip安装的django 2.2.1原封不动的内容):
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.decode(errors=‘replace‘)
return query
通过print大法输出query结果,内容为
SELECT @@SQL_AUTO_IS_NULL
数据类型为str
于是我去django的github去翻这个文件这个方法的最新/历史版本,结果最新master分支内容如下:
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.
# MySQLdb returns string, PyMySQL bytes.
return force_str(getattr(cursor, ‘_executed‘, None), errors=‘replace‘)
看函数名,应该是强制去把SQL转换成str了
我靠!!!这尼玛官网2.2.1的包不是害人么,记得该文件上面引入下这个方法
from django.utils.encoding import force_str
然后再执行managa.py命令,可以了
标签:关闭 where pip perl bytes query null python3 hub
原文地址:https://blog.51cto.com/smilepad/2412322