dataimport.py 文件源码

def DeleteAllData():
    entries = []
    entries.extend(Person.query().fetch(keys_only=True))
    entries.extend(Troop.query().fetch(keys_only=True))
    entries.extend(ScoutGroup.query().fetch(keys_only=True))
    entries.extend(Meeting.query().fetch(keys_only=True))
    entries.extend(TroopPerson.query().fetch(keys_only=True))
    entries.extend(Semester.query().fetch(keys_only=True))
    entries.extend(TaskProgress.query().fetch(keys_only=True))
    entries.extend(UserPrefs.query().fetch(keys_only=True))
    ndb.delete_multi(entries)
    ndb.get_context().clear_cache() # clear memcache