Missing encoder when using Django 1.11

[jjmurre]

When using mysqlclient-python > 1.4.0 with Django 1.11, I get this error:

In /django/db/backends/mysql/base.py", line 276, in get_new_connection
    conn.encoders[SafeBytes] = conn.encoders[bytes]

KeyError: <type 'str'>

This can be easily reproduced as follows:

make a virtualenv
pip install mysqlclient-python  # version 1.4.0 or higher


>>> import MySQLdb
>>> conn = MySQLdb.connection('localhost')  # some connection
>>> conn.encoders[bytes]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyError: <type 'str'>

[methane]

See #306.
Django touches many private areas of mysqlclient.

[jjmurre]

Ok, tx for the quick reply! I have to stay on Django 1.11 LTS (organization policy), I will pin mysqlclient accordingly.