为什么我在manage.py makemigrations上遇到语法错误？

Question

我正在用python和django进行测试项目（用于学习目的）。在某些时候我必须制作一个名为products的django应用程序，然后在“products”应用程序目录的models.py文件中我有这样的代码：

class Products (models.Model)
     title = models.TextField() 
     description = models.TextField()
     price = models.TextField()

然后在我参加如下所示的迁移时在设置文件中添加新应用程序：

> python manage.py makemigrations 

我得到的是这个错误：

  Traceback (most recent call last):
      File "manage.py", line 15, in <module>
        execute_from_command_line(sys.argv)
      File "C:\django\lib\site-packages\django\core\management\__init__.py", line 371, in execute_from_command_line
        utility.execute()
      File "C:\django\lib\site-packages\django\core\management\__init__.py", line 347, in execute
        django.setup()
      File "C:\django\lib\site-packages\django\__init__.py", line 24, in setup
        apps.populate(settings.INSTALLED_APPS)
      File "C:\django\lib\site-packages\django\apps\registry.py", line 112, in populate
        app_config.import_models()
      File "C:\django\lib\site-packages\django\apps\config.py", line 198, in import_models
        self.models_module = import_module(models_module_name)
      File "C:\django\lib\importlib\__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
      File "<frozen importlib._bootstrap>", line 983, in _find_and_load
      File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
      File "<frozen importlib._bootstrap_external>", line 724, in exec_module
      File "<frozen importlib._bootstrap_external>", line 860, in get_code
      File "<frozen importlib._bootstrap_external>", line 791, in source_to_code
      File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
      File "C:\django\mystore\products\models.py", line 5
        class Products(models.Model)
                                   ^
    SyntaxError: invalid syntax

 "

然后每当我尝试使用manage.py文件时都会发生同样的错误。我不知道我做错了什么，请帮我解决这个问题。

Answer 1

你在课堂宣言后错过了冒号。

class Products(models.Model):

另外，我会提醒您格式化。您的字段名称应排在左侧。在Python中，两行不排列的行被视为不同的代码块。