【Django】报错：File “manage.py“, line 17 ) from exc ^ SyntaxError: invalid syntax

问题描述

Django 3.1.4使用mysql数据库，进行数据迁移时，报错：

(venv) xxx@xxx-MacBook-Pro django3 % python manage.py makemigrations user
  File "manage.py", line 17
    ) from exc
         ^
SyntaxError: invalid syntax

解决办法

将 python 改为 python3

python3 manage.py makemigrations app名称

执行结果：

(venv) xxx@xxx-MacBook-Pro django3 % python3 manage.py makemigrations user
Migrations for 'user':
  user/migrations/0001_initial.py
    - Create model User
(venv) xxx@xxx-MacBook-Pro django3 % python3 manage.py migrate            
Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions, user
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0001_initial... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying auth.0008_alter_user_username_max_length... OK
  Applying auth.0009_alter_user_last_name_max_length... OK
  Applying user.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying admin.0003_logentry_add_action_flag_choices... OK
  Applying sessions.0001_initial... OK
(venv) xxx@xxx-MacBook-Pro django3 %