“<__main__.Person object at 0x7fc77b859c50>这个结果其实是Animal的实例cat在内存中的地址”显然是课程瑕疵,事实上,这个结果其实是Person的实例bob在内存中的地址
2021-07-30
from functools import reduce
def f(x,y):
return x*10+y
print(reduce(f,[1,3,5,7,9]))
def f(x,y):
return x*10+y
print(reduce(f,[1,3,5,7,9]))
2021-06-14
def f(x):
return x.capitalize()
item = map(f,['alice', 'BOB', 'CanDY'])
print(item)
return x.capitalize()
item = map(f,['alice', 'BOB', 'CanDY'])
print(item)
2021-06-14
import math
def add(x,y,f):
return f(x) +f(y)
print(add(4, 16, math.sqrt))
def add(x,y,f):
return f(x) +f(y)
print(add(4, 16, math.sqrt))
2021-05-29
class Animal():
def __init__(self,name,age):
self.name=name
self.__age=age
dog = Animal('aa',1)
print(dog.name)
print(dog.__age)
def __init__(self,name,age):
self.name=name
self.__age=age
dog = Animal('aa',1)
print(dog.name)
print(dog.__age)
2021-05-28
class Animal():
count=0
def __init__(self,name,age):
self.name = name
self.age = age
Animal.count +=1
dog = Animal('aa',1)
cat = Animal('bb',2)
print(Animal.count)
count=0
def __init__(self,name,age):
self.name = name
self.age = age
Animal.count +=1
dog = Animal('aa',1)
cat = Animal('bb',2)
print(Animal.count)
2021-05-28