Celery task delay calling convention in 4.2.0

Question

I recently upgraded celery from version 4.0.2 to 4.2.0 , the following was working prior to upgrading and I can't find what I need to change to make it work on the latest.

Example:

@task
def run_mytask(pk):
    print pk

task = tasks.run_mytask.delay(pk)

Now throws the following error:

TypeError: unbound method shadow_name() must be called with run_mytask instance as first argument (got tuple instance instead)

Answer 1

It appears the issue was fixed in celery#4572 .

As discussed in comments, pulling down the latest version and installing celery with this change resolves this issue for you, since your version did not contain these changes.