python - Django manage.py 迁移错误
问题描述
所以我目前处于虚拟环境中,当我输入命令行时:
python manage.py migrate
我遇到了这个问题:
> Traceback (most recent call last):
> File "manage.py", line 24, in <module>
> execute_from_command_line(sys.argv)
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\site-packages\django\core\management\__init__.py",
> line 371, in execute_from_command_line
> utility.execute()
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\site-packages\django\core\management\__init__.py",
> line 317, in execute
> settings.INSTALLED_APPS
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\site-packages\django\conf\__init__.py",
> line 56, in __getattr__
> self._setup(name)
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\site-packages\django\conf\__init__.py",
> line 43, in _setup
> self._wrapped = Settings(settings_module)
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\site-packages\django\conf\__init__.py",
> line 106, in __init__
> mod = importlib.import_module(self.SETTINGS_MODULE)
> File "C:\Users\DUCNGU~1\Desktop\HAULER~1\api\vnenv\lib\importlib\__init__.py",
> line 126, in import_module
> return _bootstrap._gcd_import(name[level:], package, level)
> File "<frozen importlib._bootstrap>", line 994, in _gcd_import
> File "<frozen importlib._bootstrap>", line 971, in _find_and_load
> File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
> File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
> File "<frozen importlib._bootstrap_external>", line 678, in exec_module
> File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
> File "C:\Users\Duc Nguyen\Desktop\HaulerAds\api\settings.py", line 104, in <module>
> 'PORT': int(os.getenv('POSTGRES_PORT')),
> TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'
我当前的 Django 版本 2.0.3。我检查了python pass,我有正确的路径。请帮忙,谢谢!
解决方案
您正在尝试检索POSTGRES_POST
,os.environ
但它不存在。
int()
无法转换NoneType
。
如果您的环境中可能不存在该密钥。
您可以设置默认值:
'PORT': int(os.getenv('POSTGRES_PORT',5432))
第二个参数是默认端口,以防密钥不存在os.environ
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