human
I wrote the below code

    errors = []
    def error_tracker(msg):
        'Log    errors'
        exc_str = ''
        if in_exception_handler():
            exc_str = exc_info_to_str(sys.exc_info())
            if (('python2.7/site-packages/gunicorn/workers/sync.py' in exc_str) and ('[Errno    11]    Resource    temporarily    unavailable' in exc_str)):
                exc_str = ''
        errors.append((msg, exc_str))
    return ErrorLog(error_tracker, errors)

What's a good function header?
 Here's a good function header?
assistant
#Here's a good function header.

def make_error_tracker():