Cyclic.sh部署Django应用出现django模块找不到错误求助

我在cyclic.sh上部署Django应用，requirements.txt放在server目录根路径下，部署日志显示依赖已成功下载，但访问页面时却抛出ModuleNotFoundError: No module named 'django'错误。

部署日志 #

2024-01-07T23:37:49.675Z: Setting environment variables:
  CYCLIC_URL="http****************"
  CYCLIC_DB="lazy****************"
  CYCLIC_BUCKET_NAME="cycl****************"
  DJANGO_SETTINGS_MODULE="serv****************"
  REACT_APP_API_URL="********************"
  CYCLIC_APP_ID="lazy****************"
2024-01-07T23:37:49.051Z: [CYCLIC] cloning...
2024-01-07T23:37:50.334Z: From https://github.com/AnshUjlayan/CourseOverflow
 * branch            7fd1626cd9c8a1595531ba8851d0b94a56977fee -> FETCH_HEAD
2024-01-07T23:37:50.394Z: HEAD is now at 7fd1626 idek
2024-01-07T23:37:50.399Z: [CYCLIC] Building...
2024-01-07T23:37:50.601Z: Build Configuration:
  Root Path: /server
  Output Path: /server
  Main file: server/wsgi.py
  Static Site: false
  Runtime: python3.11
  Branch: deployment
  Ref: 7fd1626cd9c8a1595531ba8851d0b94a56977fee

2024-01-07T23:37:50.604Z: [CYCLIC] verifying...
2024-01-07T23:37:51.346Z: [CYCLIC] using: python:3.11.2 pip:22.3.1 runtime:python3.11
[CYCLIC] building from: /server
2024-01-07T23:37:51.347Z: [CYCLIC] installing dependencies from /server/requirements.txt into /server
2024-01-07T23:38:02.767Z: [CYCLIC] bundling /server...
2024-01-07T23:38:07.459Z: 

[CYCLIC] packaging 166.65 MB...

2024-01-07T23:38:07.459Z: [CYCLIC] done packaging
2024-01-07T23:38:07.459Z: [CYCLIC] Deploying...
2024-01-07T23:38:21.846Z: deployed eu-west-1 -  14.337s
2024-01-07T23:38:21.847Z: SUCCESS

took 34.5 seconds
api deployed at:
https://lazy-gray-lizard-belt.cyclic.app

访问页面时的错误日志 #

05:13:04.828

 Traceback (most recent call last):
  File "/var/task/server/wsgi.py", line 11, in <module>
     from django.core.wsgi import get_wsgi_application
ModuleNotFoundError: No module named 'django'
 [CYCLIC] ERROR: No response from server on port 3000

项目文件结构 #

- server
  - api
  - build_files.sh
  - manage.py
  - requirements.txt
  - staticfiles
  - utils
  - server
    - __init__.py
    - __pycache__
    - asgi.py
    - settings.py
    - urls.py
    - wsgi.py

解决方法 #

• 手动添加依赖路径到Python环境：在server/server/wsgi.py开头加入以下代码，确保Python能找到安装的依赖：

import sys
import os
# 将外层server目录添加到系统路径
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
# 如果依赖安装在server下的site-packages目录，补充添加该路径
sys.path.append(os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), 'lib', 'python3.11', 'site-packages'))

• 确认requirements.txt内容：检查requirements.txt是否包含Django条目，例如Django==4.2.8，避免拼写错误或版本遗漏。

• 调整Cyclic构建配置：在Cyclic项目设置中，将Root Path改为项目根目录，然后自定义构建命令为：

cd server && pip install -r requirements.txt

• 使用虚拟环境隔离依赖：修改build_files.sh，添加虚拟环境创建与激活步骤，确保运行时使用正确的依赖环境：

python -m venv venv
source venv/bin/activate
pip install --upgrade pip
pip install -r requirements.txt

内容的提问来源于stack exchange，提问作者AnshUjlayan