Why doesn't gcsfs allow projects different from the default project in google_default?

[yokomotod]

With account which has $ gcloud config get-value project # => project-a,

fs = gcsfs.GCSFileSystem(project='project-b')

raise validation error:

ValueError: User-provided project 'project-b' does not match the google default project 'project-a'. Either

  1. Accept the google-default project by not passing a `project` to GCSFileSystem
  2. Configure the default project to match the user-provided project (gcloud config set project)
  3. Use an authorization method other than 'google_default' by providing 'token=...'

However, I do want to use another project. Why gcsfs doesn't allow this?

My google_default account has correct permission to access project-b so it's no problem to access from the account. (I believe the account's default project doesn't matter.)

For option2, I use multiple fs objects for multiple projects with single google_default account, so I can't switch default project (gcloud config set project) to match.

For option3, I would like to use the Application Default Credential mechanism to make it work conveniently both on cloud and local.