实例详解python高级函数的使用

ls = [i for i in range(10)]

#print(ls)

def fun1(a,*b):

    for i in b:

        print(a,i)

#fun1(1,*ls)

def fun2(name,age,**kw):

    print("name:",name,"age:",age,"other:",kw)

fun2('fanhaitao','26',参数= 'random')

**kw参数把键值对转换成字典的形式

fun3 = lambda x:x+1

print(fun3(99))

#100

fun4 = lambda x,y :x*x + y*y

print(fun4(3,4))

#25

#定义一个装饰器

def log(func):

    def wrapper(*args,**kw):

        print('call %s()' % func.__name__)

        return func(*args,**kw)

    return wrapper

@log

def now():

    print('2018-3-29')

now()

#定义一个装饰器

def log(text):

    def decorator(func):

        def wrapper(*args,**kw):

            print('%s %s():' % (text,func.__name__))

            return func(*args,**kw)

        return wrapper

    return decorator

@log("可爱的参数")

def now():

    print('2018-3-29')

now()

a = [1,2,3]

b = 'abcde'

for i in zip(a,b):

    print(i)

for i,j in zip(a,b):

    print("Index:",i,";Item:",j)

for i,j in enumerate('abcde'):

    print(i,j)

print(list(filter(lambda x:(x*x+x+2)%8 == 0,range(100))))

print(list(map(lambda x:x**2,range(5))))

from functools import reduce

add = lambda x,y:x+y

ls = [i for i in range(101)]

print(reduce(add,ls))