我正在建造一个加热班。此类的每个实例都具有属性“temperature”。加热还必须支持方法temperature(),它将属性'temperature'打印为整数。
当我调用方法temperature()时,我得到错误'int'对象不可调用,因为self.temperature已被定义为整数。
我该如何解决这个问题?
代码:
class Heating:
"""
>>> machine1 = Heating('radiator kitchen', temperature=20)
>>> machine2 = Heating('radiator living', minimum=15, temperature=18)
>>> machine3 = Heating('radiator bathroom', temperature=22, minimum=18, maximum=28)
>>> print(machine1)
radiator kitchen: current temperature: 20.0; allowed min: 0.0; allowed max: 100.0
>>> machine2
Heating('radiator living', 18.0, 15.0, 100.0)
>>> machine2.changeTemperature(8)
>>> machine2.temperature()
26.0
>>> machine3.changeTemperature(-5)
>>> machine3
Heating('radiator bathroom', 18.0, 18.0, 28.0)
"""
def __init__(self, name, temperature = 10, minimum = 0, maximum = 100):
self.name = name
self.temperature = temperature
self.minimum = minimum
self.maximum = maximum
def __str__(self):
return '{0}: current temperature: {1:.1f}; allowed min: {2:.1f}; allowed max: {3:.1f}'.format(self.name, self.temperature, self.minimum, self.maximum)
def __repr__(self):
return 'Heating(\'{0}\', {1:.1f}, {2:.1f}, {3:.1f})'.format(self.name, self.temperature, self.minimum, self.maximum)
def changeTemperature(self, increment):
self.temperature += increment
if self.temperature < self.minimum:
self.temperature = self.minimum
if self.temperature > self.maximum:
self.temperature = self.maximum
def temperature(self):
return self.temperature
# testen van het programma
if __name__ == '__main__':
import doctest
doctest.testmod()
答案 0 :(得分:6)
您不能同时拥有同名的方法和属性。方法也是属性,尽管你可以调用它们。
只需将属性重命名为其他内容即可。您可以使用_temperature
:
def __init__(self, name, temperature = 10, minimum = 0, maximum = 100):
self.name = name
self._temperature = temperature
self.minimum = minimum
self.maximum = maximum
def __str__(self):
return '{0}: current temperature: {1:.1f}; allowed min: {2:.1f}; allowed max: {3:.1f}'.format(self.name, self._temperature, self.minimum, self.maximum)
def __repr__(self):
return 'Heating(\'{0}\', {1:.1f}, {2:.1f}, {3:.1f})'.format(self.name, self._temperature, self.minimum, self.maximum)
def changeTemperature(self, increment):
self._temperature += increment
if self.temperature < self.minimum:
self._temperature = self.minimum
if self.temperature > self.maximum:
self._temperature = self.maximum
def temperature(self):
return self._temperature
现在你的班级有_temperature
(整数)和temperature()
(方法);后者返回前者。