ImportError:无法从“backport”(未知位置)导入名称“zoneinfo”

Question

我试图在Apache2服务器上部署我的Django模型，它在'ip':8000上运行良好。但是，当我尝试运行没有8000端口之后，在完成所有的先决条件之后，我得到了这个错误。

[Thu Jul 07 10:18:36.178228 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]   File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
[Thu Jul 07 10:18:36.178240 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]     return _bootstrap._gcd_import(name[level:], package, level)
[Thu Jul 07 10:18:36.178247 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]   File "/root/novo-ai-api-main/backend/dj/lib/python3.8/site-packages/django/db/backends/sqlite3/base.py", line 20, in <module>
[Thu Jul 07 10:18:36.178253 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]     from django.db.backends.base.base import BaseDatabaseWrapper, timezone_constructor
[Thu Jul 07 10:18:36.178260 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]   File "/root/novo-ai-api-main/backend/dj/lib/python3.8/site-packages/django/db/backends/base/base.py", line 12, in <module>
[Thu Jul 07 10:18:36.178277 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245]     from backports import zoneinfo
[Thu Jul 07 10:18:36.178308 2022] [wsgi:error] [pid 368483:tid 139647379601152] [remote 106.79.194.125:58245] ImportError: cannot import name 'zoneinfo' from 'backports' (unknown location)

这些是我所有的工作文件

000-default.conf

<VirtualHost *:80>
        #ServerAdmin webmaster@localhost
        DocumentRoot /root/novo-ai-api-main


        ErrorLog /root/novo-ai-api-main/error.log
        CustomLog /root/novo-ai-api-main/access.log combine


        <Directory /root/novo-ai-api-main/backend/server/server>
                <Files wsgi.py>
                         Require all granted
                </Files>
        </Directory>
        Alias /static /root/novo-ai-api-main/static
        <Directory /root/novo-ai-api-main/static>
                Require all granted
        </Directory>


        WSGIScriptAlias / /root/novo-ai-api-main/backend/server/server/wsgi.py
        WSGIDaemonProcess django_app python-path=/root/novo-ai-api-main/backend/server  python-home=/root/novo-ai-api-main/backend/dj/
        WSGIProcessGroup django_app

</VirtualHost>

apache2.conf

apache2.conf

ServerRoot "/etc/apache2"
Timeout 300
MaxKeepAliveRequests 100

#KeepAliveTimeout: Number of seconds to wait for the next request from the
#same client on the same connection.
KeepAliveTimeout 5

#These need to be set in /etc/apache2/envvars
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}

LogLevel warn

#Sets the default security model of the Apache2 HTTPD server. It does

<Directory />
        Options FollowSymLinks
        AllowOverride All
        Require all granted
</Directory>

<Directory /var/www/>
        AllowOverride All
        Require all granted
</Directory>

<Directory /var/www/html>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
</Directory>


#AccessFileName .htaccess

#<FilesMatch "^\.ht">
#Require all denied
#</FilesMatch>


IncludeOptional conf-enabled/*.conf


IncludeOptional sites-enabled/*.conf

#vim: syntax=apache ts=4 sw=4 sts=4 sr noet

我为Python3.8.10正确地安装了mod_wsgi

#wsgi.py

 import os, sys
 import site
 site.addsitedir('/root/novo-ai-api-main/backend/dj/lib/python3.8/site-packages')
 from django.core.wsgi import get_wsgi_application
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'server.settings')
 application = get_wsgi_application()

而且，我已经给了所有工作文件的权限，但是什么都没有发生。

#### 
    drwx--x--x  9 root     root       4096 Jun 16 22:05 .
    drwxr-xr-x 19 root     root       4096 Jun 14 14:05 ..
    drwxr-xr-x  3 root     root       4096 Jun 13 23:38 .local
    drwxrwxr-x  8 root     root       4096 Jun 16 01:24 mod_wsgi-4.9.2
    drwxr-xr-x  5 www-data www-data   4096 Jun 14 23:53 novo-ai-api-main <-(project)
    drwxr-xr-x 5 www-data www-data     4096 Jun 14 23:14 backend
    drw-r--r-- 8 www-data www-data     4096 Jun 14 00:33 static
    drwxr-xr-x 6 www-data www-data 4096 Jun 14 00:16 dj <- (venv) ####

接下来我能试试什么？

Answer 1

ModuleNotFoundError:没有名为“backports”的模块，我首先从项目中删除包backports.zoneinfo，然后通过输入pip backports.zoneinfotzdata重新安装，从而解决了这个错误。

Answer 2

最后，我通过对Django项目中的所有文件和目录授予权限来解决这个问题。使用此命令

find /root/novo-ai-api-main -type d -exec chmod 755 {} \;

它解决了我与模块相关的许多错误。如果您是Apache部署新手，请确保为目录中的所有文件提供正确的权限。