python manage.py makemigrations 出现Traceback (most recent call last)如下一堆错误的坑

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/core/management/__init__.py", line 356, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/core/management/commands/makemigrations.py", line 110, in handle
    loader.check_consistent_history(connection)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/migrations/loader.py", line 282, in check_consistent_history
    applied = recorder.applied_migrations()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
    self.ensure_schema()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema
    if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/backends/base/base.py", line 254, in cursor
    return self._cursor()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/backends/base/base.py", line 229, in _cursor
    self.ensure_connection()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
    self.connect()
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/backends/base/base.py", line 189, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/home/chengbo/.virtualenvs/testblog/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 276, in get_new_connection
    conn.encoders[SafeBytes] = conn.encoders[bytes]
KeyError: <class 'bytes'>

首先检查settin.py看配置有没有错,发现没错.
接着看__init__.py 发现

import pymysql as pymysql

pymysql.install_as_MySQLdb()

没有写,真是日了XX了.

加上就好了.