Python 脚本直接通过命令行运行，但不通过 shell/bash 脚本运行

Question

我有一个 python 脚本 main.py 它做了一些事情并每天通过 crontab 运行它，我创建了以下文件（我认为它称为 bash 脚本）：

#!/bin/sh
source /Users/PathToProject/venv/bin/activate
python /Users/PathToProject/main.py

一段时间以来，它每天都运行，没有任何问题。

现在我添加了一项功能，该功能可以将包含一些结果的 .CSV 文件随后通过 PyDrive2 在我的 Google 驱动器中保存到 main.py。通过命令行运行这个新脚本时，它每次都能成功运行，没有任何错误。

我以为 crontab 也会运行，但现在我得到了下面的 Traceback。

/Users/PathToProject/venv/lib/python3.8/site-packages/oauth2client/_helpers.py:255: UserWarning: Cannot access mycreds.json: No such file or directory
  warnings.warn(_MISSING_FILE_MESSAGE.format(filename))
Traceback (most recent call last):
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 121, in _loadfile
    with open(filename, 'r') as fp:
FileNotFoundError: [Errno 2] No such file or directory: 'client_secrets.json'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/pydrive2/auth.py", line 431, in LoadClientConfigFile
    client_type, client_info = clientsecrets.loadfile(
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 165, in loadfile
    return _loadfile(filename)
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 124, in _loadfile
    raise InvalidClientSecretsError('Error opening file', exc.filename,
oauth2client.clientsecrets.InvalidClientSecretsError: ('Error opening file', 'client_secrets.json', 'No such file or directory', 2)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/PathToProject/main.py", line 5, in <module>
    main()
  File "/Users/PathToProject/version2.py", line 20, in main
    PYD.download_file(data_file)
  File "/Users/PathToProject/PyDrive_Modul.py", line 58, in download_file
    file_ID = get_ID_of_title(filename)
  File "/Users/PathToProject/PyDrive_Modul.py", line 47, in get_ID_of_title
    drive = google_drive_auth()
  File "/Users/PathToProject/PyDrive_Modul.py", line 11, in google_drive_auth
    gauth.LocalWebserverAuth()
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/pydrive2/auth.py", line 123, in _decorated
    self.GetFlow()
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/pydrive2/auth.py", line 507, in GetFlow
    self.LoadClientConfig()
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/pydrive2/auth.py", line 411, in LoadClientConfig
    self.LoadClientConfigFile()
  File "/Users/PathToProject/venv/lib/python3.8/site-packages/pydrive2/auth.py", line 435, in LoadClientConfigFile
    raise InvalidConfigError("Invalid client secrets file %s" % error)
pydrive2.settings.InvalidConfigError: Invalid client secrets file ('Error opening file', 'client_secrets.json', 'No such file or directory', 2)

如果我编辑 python 脚本并跳过上传/下载到谷歌驱动器的部分，它可以正常工作。

现在我不知道为什么会出现此错误以及如何解决此问题。该错误消息似乎具有误导性，因为 client_secrets.json 位于目录中，并且可以通过命令行运行。

Answer 1

当您通过命令行运行时，它会选择 json 文件和其他文件的路径。Cron 找不到路径。在路径中是绝对的，它将顺利运行。如果绝对路径不可能，请尝试相对于 CRON 位置路径的相对路径。