python经典面试题

1、方法和函数的区别

from types import MethodType,FunctionType
class  A:
    def func(self):pass
a = A().func
b = A.func
print(isinstance(a,FunctionType))
print(isinstance(b,FunctionType))
print(isinstance(a,MethodType))
print(isinstance(b,MethodType))

2、生成器相关

def test():
    for i in range(4):
        yield i
def add(n,i):
    return n+i
g=test()
for n in [1,10]:
    g=(add(n,i) for i in g)
print(list(g))

 

def test():
    for i in range(4):
        yield i
def add(n,i):
    return n+i
g=test()
for n in [1,10]:
    h=(add(n,i) for i in g)
print(list(h))