撰寫一個名為“Person”的類，其中包含一個人的姓名、地址和電話號碼的資料屬性。
class Person:
def __init__(self, n, a, p):
self.name = n
self.address = a
self.phone = p
def set_name(self, n):
self.name = n
def set_address(self, a):
self.address = a
def set_phone(self, p):
self.phone = p
def get_name(self):
return 'Customer Name:'
def get_address(self):
return 'Customer Address:'
def get_phone(self):
return 'Customer Phone Number:'
def main():
n = input('Enter Customer Name: ')
a = input('Enter the Customer Address: ')
p = input('Enter the Customer Phone Number: ')
print(n.get_person())
print(a.get_address())
print(p.get_phone())
main()
我怎樣才能修復我的屬性錯誤？
uj5u.com熱心網友回復：
首先，您的錯誤確實應該是TypeError，因為您正在從類中呼叫實體方法：
>>> class Foo:
... def __init__(self):
... self.bar = 1
... def thing(self):
... return self.bar
...
>>>
>>>
>>> Foo.thing()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: thing() missing 1 required positional argument: 'self'
但是，無論如何修復都是相同的。
你需要創建一個類的實體來訪問它的屬性：
class Foo:
def __init__(self):
self.bar = 1
# Foo is a class, but it doesn't have a
# bar attribute. An *instance* of the class
# does
# this raises an attributeError
Foo.bar
AttributeError
# this doesn't, because we created an instance
foo = Foo()
foo.bar
1
你需要創建一個person實體，然后你就可以獲取它的屬性：
class Person:
def __init__(self, name, address, phone):
self.name = name
self.address = address
self.phone = phone
Person.phone
# AttributeError
# Create an instance of Person here
tim = Person(name='Tim', address='1234 Main St', phone='555-5555')
# Then you can get Tim's information
tim.phone
'555-5555'
uj5u.com熱心網友回復：
您需要使用類似person = Person(n, a, p). 在main()函式的輸入陳述句之后執行此操作。
其次，在列印屬性時，您需要參考您創建的 Person 類的實體（即 person.get_person()、person.get_address() 等）。
最后，在呼叫 get 函式時，請確保這些函式回傳您要查找的值。該函式get_address()應回傳 self.address。
這是我的建議：
class Person:
def __init__(self, n, a, p):
self.name = n
self.address = a
self.phone = p
def set_name(self, n):
self.name = n
def set_address(self, a):
self.address = a
def set_phone(self, p):
self.phone = p
def get_name(self):
return self.name
def get_address(self):
return self.address
def get_phone(self):
return self.phone
def main():
n = input('Enter Customer Name: ')
a = input('Enter the Customer Address: ')
p = input('Enter the Customer Phone Number: ')
person = Person(n, a, p) # create the instance
# get attributes of instantiated object
print(person.get_person())
print(person.get_address())
print(person.get_phone())
main()
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