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Dec 17th, 2019
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Python 0.35 KB | None | 0 0
  1.     @classmethod
  2.     def copy(cls, sales, default=None):
  3.         def default_sale_date(data):
  4.             return data['sale_date']
  5.  
  6.         if default is None:
  7.             default = {}
  8.         else:
  9.             default = default.copy()
  10.         default.setdefault('sale_date', default_sale_date)
  11.         return super().copy(sales, default=default)
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