class LineItem:
description = model.NonBlank()
weight = model.Quantity()
price = model.Quantity()
def __init__(self, description, weight, price):
self.description = description
self.weight = weight
self.price = price
def subtotal(self):
return self.weight * self.price
class LineItem:
# put model.NonBlank to use. The rest of the code is unchanged
description = model.NonBlank()
weight = model.Quantity()
price = model.Quantity()
def __init__(self, description, weight, price):
self.description = description
self.weight = weight
self.price = price
def subtotal(self):
return self.weight * self.price
class LineItem:
description = model.NonBlank()
weight = model.Quantity()
price = model.Quantity()
def __init__(self, description, weight, price):
self.description = description
self.weight = weight
self.price = price
def subtotal(self):
return self.weight * self.price
# >>> br_nuts = LineItem('Brazil nuts', 10, 34.95)
# >>> br_nuts.price
# 34.95
class LineItem:
'''
>>> nutmeg = LineItem('Moluccan nutmeg', 8, 13.95)
>>> nutmeg.weight, nutmeg.price
(8, 13.95)
>>> truffle = LineItem('White truffle', 100, 0)
Traceback (most recent call last):
...
ValueError: value must be > 0
'''
description = model.NonBlank()
weight = model.Quantity()
price = model.Quantity()
def __init__(self, description, weight, price):
self.description = description
self.weight = weight
self.price = price
def subtotal(self):
return self.weight * self.price
