为什么全局站点包看不到本地站点包？答案

【问题标题】：Why global site-package does not see a local one?为什么全局站点包看不到本地站点包？
【发布时间】：2021-10-01 19:00:47
【问题描述】：

我使用系统包管理器安装python包：

apk add py3-gunicorn

然后我创建并用 falcon 填充 venv：

python3 -mvenv --system-site-packages .
. ./bin/activate
pip3 install falcon

到目前为止没有错误。但是当我尝试实际运行我的应用程序时，我收到以下错误：

[2021-07-25 14:36:37 +0000] [2] [INFO] Starting gunicorn 20.0.4
[2021-07-25 14:36:37 +0000] [2] [INFO] Listening at: unix:/opt/xxx/sock/xxx.sock (2)
[2021-07-25 14:36:37 +0000] [2] [INFO] Using worker: sync
[2021-07-25 14:36:37 +0000] [7] [INFO] Booting worker with pid: 7
[2021-07-25 14:36:37 +0000] [7] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
    worker.init_process()
  File "/usr/lib/python3.9/site-packages/gunicorn/workers/base.py", line 119, in init_process
    self.load_wsgi()
  File "/usr/lib/python3.9/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/usr/lib/python3.9/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/usr/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
    return self.load_wsgiapp()
  File "/usr/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/usr/lib/python3.9/site-packages/gunicorn/util.py", line 358, in import_app
    mod = importlib.import_module(module)
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 855, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/opt/xxx/src/app.py", line 1, in <module>
    import falcon
ModuleNotFoundError: No module named 'falcon'

但是，当我尝试运行时

python3 -c 'import falcon'

它有效。所以看起来“全球”的独角兽看不到“本地”的猎鹰，但是我不确定为什么。有什么想法吗？

【问题讨论】：

标签： python python-venv falconframework

【解决方案1】：

所以答案实际上是在venv中使用python而不是直接调用gunicorn脚本，所以不是

exec gunicorn ...

这个

exec python3 /usr/bin/gunicorn ...

【讨论】：