為什么將 Flask 應用程序推送到 Heroku 失敗？

Question

我只是想將 Flask 應用程序推送到 Heroku，但遇到以下錯誤：

remote:            ERROR: Command errored out with exit status 1:
remote:             command: /app/.heroku/python/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-qq0uk569/xlwings/setup.py'"'"'; __file__='"'"'/tmp/pip-install-qq0uk569/xlwings/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-dxixzzkg
remote:                 cwd: /tmp/pip-install-qq0uk569/xlwings/
remote:            Complete output (5 lines):
remote:            Traceback (most recent call last):
remote:              File "<string>", line 1, in <module>
remote:              File "/tmp/pip-install-qq0uk569/xlwings/setup.py", line 32, in <module>
remote:                raise OSError("xlwings requires an installation of Excel and therefore only works on Windows and macOS. To enable the installation on Linux nevertheless, do: export INSTALL_ON_LINUX=1; pip install xlwings")
remote:            OSError: xlwings requires an installation of Excel and therefore only works on Windows and macOS. To enable the installation on Linux nevertheless, do: export INSTALL_ON_LINUX=1; pip install xlwings
remote:            ----------------------------------------
remote:        ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
remote:  !     Push rejected, failed to compile Python app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...
remote: 
remote: !       Push rejected to browebgen.
remote: 
To https://git.heroku.com/browebgen.git
 ! [remote rejected] main -> main (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/browebgen.git'

我不確定我需要做什么才能擺脫這個錯誤。

Answer 1

錯誤消息說明了一切：

xlwings 需要安裝 Excel，因此僅適用於 Windows 和 macOS。 盡管如此，要在 Linux 上啟用安裝，請執行： export INSTALL_ON_LINUX=1; pip 安裝 xlwings

您可能在您的應用程序中使用了一個名為xlwings的包，該包是為在 Windows 和 Mac 上使用而構建的，但 Heroku 上的服務器上安裝了 linux，因此您首先必須將環境變量INSTALL_ON_LINUX設置為1然后嘗試部署再次應用。

從 Heroku CLI，您可以執行以下操作：

heroku config:set INSTALL_ON_LINUX=1