from panoptes_client import Panoptes, Project

Panoptes.connect(
    username='astopy',
    password='',
    admin=True,
)

processed = 0

project = Project.find(slug='')
for subject_set in project.links.subject_sets:
    print('\rProcessing set "{}"'.format(subject_set.display_name))
    for subject in subject_set.subjects:
        new_metadata = {}
        for key, value in subject.metadata.items():
            new_metadata[key.strip()] = value
        subject.metadata.clear()
        subject.metadata.update(new_metadata)
        subject.save()
        processed += 1
        print('\rProcessed: {}'.format(processed), end='')