a= {'Locator__creation_date': {'start': datetime.date(2013, 11, 14), 'end': datetime.date(2013, 11, 14)}, 'Locator__employed': u'True', 'Locator__employer_state': u'AL', 'Locator__receiving_hiv_treatment': u'True', 'Locator__hiv_treatment_state': u'AR', 'Locator__mental_health_provider': u'False', 'Locator__parole': u'True', 'Locator__parole_state': u'IA', 'data_model_name': ['Locator']}
ast.literal_eval(a)
它给
ValueError: malformed string