report.py

from experimenter.experiments.models import Experiment
statuses = [s for s, _ in Experiment.STATUS_CHOICES]
status_pairs = list(zip([None] + statuses, statuses))

for experiment in Experiment.objects.all():
    experiment_dates = []
    for old_s, new_s in status_pairs:
        experiment_dates.append(str(experiment._transition_date(old_s, new_s)))
    print(','.join([str(experiment), experiment.experiment_url, *experiment_dates]))