1. 迭代器
#iteration
def fib(n):
#迭代初始值
a = 0
b = 1
#迭代表达式
for i in range(n):
yield a+b
a,b = b, a+b
for i in fib(10):
print(i)
2.递归
#recursion
def fib(n):
#递归终止条件
if n == 1:
return 1
elif n == 0:
return 0
#递归表达式
return fib(n-1) + fib(n-2)
print(fib(10))
3.Lamada
a = lambda x,y: x+y
print(a(1,2))
4.Map
lst1 = [1,2,3]
lst2 = [4,5,6]
lst3 = [7,8,9,10]
b = map(lambda x,y,z:str(x)+str(y)+str(z),lst1,lst2,lst3)
for i in b:
print(i)
5.装饰器
#带有不定参数的装饰器
import time
def deco(func):
def wrapper(*args, **kwargs):
startTime = time.time()
func(*args, **kwargs)
endTime = time.time()
msecs = (endTime - startTime)*1000
print("time is %d ms" %msecs)
return wrapper
@deco
def func(a,b):
print("hello,here is a func for add :")
time.sleep(1)
print("result is %d" %(a+b))
if __name__ == '__main__':
f = func(3,4)
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