def make_value_from_form(self, value):
    if value in (None, ''):
      return None
    if not isinstance(value, self.data_type):
      value = self.data_type(value)
    return value
:param repository: GitPython Repository
dataset/ETHPy150Open IanLewis/kay/kay/utils/forms/modelform.py/Property.make_value_from_form--crossover with--dataset/ETHPy150Open zalando/turnstile/turnstile/models/staging.py/StagingArea.__init__