用于返回字典的Python类
用于返回字典的Python类
提问于 2018-08-19 01:03:10
我在网上研究过，但仍然很难理解如何创建类。SoloLearn、DataCamp和其他站点中的示例通常使用Person / Employee示例，如下所示：
class Person:
def __init__(self, first, last):
self.firstname = first
self.lastname = last
def Name(self):
return self.firstname + " " + self.lastname
class Employee(Person):
def __init__(self, first, last, staffnum):
Person.__init__(self,first, last)
self.staffnumber = staffnum
def GetEmployee(self):
return self.Name() + ", " + self.staffnumber
x = Person("Marge", "Simpson")
y = Employee("Homer", "Simpson", "1007")
print(x.Name())
print(y.GetEmployee())我正在尝试创建一个示例类，它通过稍微修改字典来返回字典。代码如下：
class Place:
def __init__(self, country, province):
self.country= country
self.province = province
def CountryState(self):
return {
'Province': self.province,
'Country': self.country
}
class Location(Place):
def __init__(self, country, province, city, street, postal):
super(Place, self).__init__(country, province, city, street, postal)
self.city = city
self.street = street
self.postal = postal
def GetLocation(self):
return CountryState().update({
'City': self.city,
'Street': self.street,
'Postal': self.postal
})
if __name__=="__main__":
x = Place('United States', "California")
y = Location("United States", "California", "Los Angeles", "Johnson Street", "90007")
print(x.CountryState())
print(y.GetLocation())我使用pdb.set_trace()得到一个回溯，如下所示
Traceback (most recent call last):
File "/home/john/Python/class-example.py", line 37, in <module>
y = Location("United States", "California", "Los Angeles", "Johnson Street", "90007")
File "/home/john/Python/class-example.py", line 22, in __init__
super(Place, self).__init__(country, province, city, street, postal)
TypeError: object.__init__() takes no parameters
> /usr/lib/python3.5/idlelib/run.py(370)runcode()
-> jit = self.rpchandler.console.getvar("<<toggle-jit-stack-viewer>>")pdb list
365 self.usr_exc_info = sys.exc_info()
366 if quitting:
367 exit()
368 # even print a user code SystemExit exception, continue
369 print_exception()
370 -> jit = self.rpchandler.console.getvar("<<toggle-jit-stack-viewer>>")
371 if jit:
372 self.rpchandler.interp.open_remote_stack_viewer()
373 else:
374 flush_stdout()
375 我还没能让__init__接受参数。请让我知道我遗漏了什么，这样我就可以从以下行返回字典：
print(x.CountryState())
print(y.GetLocation())
{ 'Country': 'United States', 'State': 'California' }
{ 'Country': 'United States', 'City': 'Los Angeles', 'Street':'Johnson Street', 'Postal Code': '90007'}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51910868
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