在 pythonanywhere 中部署 django 应用程序时出错答案

【问题标题】：error deploy django app in pythonanywhere在 pythonanywhere 中部署 django 应用程序时出错
【发布时间】：2021-07-23 04:43:05
【问题描述】：

2021-04-29 18:44:38,475: ***************************************************
2021-04-29 18:44:38,475: If you're seeing an import error and don't know why,
2021-04-29 18:44:38,475: we have a dedicated help page to help you debug: 
2021-04-29 18:44:38,475: https://help.pythonanywhere.com/pages/DebuggingImportError/
2021-04-29 18:44:38,475: ***************************************************
2021-04-29 18:44:39,075: Error running WSGI application
2021-04-29 18:44:39,076: TypeError: 'str' object is not callable
2021-04-29 18:44:39,076:   File "/var/www/paulosix_pythonanywhere_com_wsgi.py", line 29, in <module>
2021-04-29 18:44:39,076:     application = get_wsgi_application()
2021-04-29 18:44:39,076: 
2021-04-29 18:44:39,077:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
2021-04-29 18:44:39,077:     django.setup(set_prefix=False)
2021-04-29 18:44:39,077: 
2021-04-29 18:44:39,077:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/django/__init__.py", line 19, in setup
2021-04-29 18:44:39,077:     configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
2021-04-29 18:44:39,077: 
2021-04-29 18:44:39,077:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/django/conf/__init__.py", line 82, in __getattr__
2021-04-29 18:44:39,077:     self._setup(name)
2021-04-29 18:44:39,077: 
2021-04-29 18:44:39,077:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/django/conf/__init__.py", line 69, in _setup
2021-04-29 18:44:39,077:     self._wrapped = Settings(settings_module)
2021-04-29 18:44:39,077: 
2021-04-29 18:44:39,078:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/django/conf/__init__.py", line 170, in __init__
2021-04-29 18:44:39,078:     mod = importlib.import_module(self.SETTINGS_MODULE)
2021-04-29 18:44:39,078: 
2021-04-29 18:44:39,078:   File "/home/paulosix/djangoSIGE/djangosige/configs/__init__.py", line 3, in <module>
2021-04-29 18:44:39,078:     from .settings import *
2021-04-29 18:44:39,078: 
2021-04-29 18:44:39,078:   File "/home/paulosix/djangoSIGE/djangosige/configs/settings.py", line 19, in <module>
2021-04-29 18:44:39,078:     ALLOWED_HOSTS = config('paulosix.pythonanywhere.com', 'localhost', '127.0.0.1')
2021-04-29 18:44:39,078: 
2021-04-29 18:44:39,078:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/decouple.py", line 197, in __call__
2021-04-29 18:44:39,078:     return self.config(*args, **kwargs)
2021-04-29 18:44:39,078: 
2021-04-29 18:44:39,079:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/decouple.py", line 85, in __call__
2021-04-29 18:44:39,079:     return self.get(*args, **kwargs)
2021-04-29 18:44:39,079: 
2021-04-29 18:44:39,079:   File "/home/paulosix/.virtualenvs/singe/lib/python3.8/site-packages/decouple.py", line 79, in get
2021-04-29 18:44:39,079:     return cast(value)

【问题讨论】：

标签： pythonanywhere

【解决方案1】：

看起来您将错误的参数传递给预期会返回 ALLOWED_HOSTS 列表的 config 调用。根据python-decouple docs 正确调用config 应该是这样的：

ALLOWED_HOSTS = config(
    'ALLOWED_HOSTS', 
    default=['paulosix.pythonanywhere.com', 'localhost', '127.0.0.1'], 
    cast=lambda v: [s.strip() for s in v.split(',')]
)

您的.env 文件中有一个问题，python-decouple 首先在寻找ALLOWED_HOSTS 的值。

【讨论】：