movie_people=["sb+_alex","sb_wupeiqi","han"]

# def filter_test(array):

#     ret=[]

#     for p in array:

#         if not p.startswith('sb'):

#             ret.append(p)

#

#     return ret

#

# end=filter_test(movie_people)

# print(end)

# movie_people=["alex","sb_wupeiqi","han_sb"]

# def sb_show(n):

#     return n.endswith('sb')

#

# def filter_test(func,array):

#     ret=[]

#     for p in array:

#         if not func(p):

#             ret.append(p)

#

#     return ret

#

# end=filter_test(sb_show,movie_people)

# print(end)

#终极版本

#lambda n:n.startwith('sb')

def filter_test(func,array):#注意在函数调用中,尽量不要直接传入全局变量,这会修改全局变量的值,尽量使用参数赋值

    ret=[]

    for p in array:

        if not func(p):

            ret.append(p)

    return ret

res=filter_test(lambda n:n.startswith('sb'),movie_people)

print(res)

#filter函数

print(list(filter(lambda n: not n.startswith('sb'),movie_people)))

num_1=[1,2,3,4,5,6,100]

res=0

for num in num_1:

    res+=num

print(res)

# def multi(x,y):

#     return x*y

#lambda:x,y:x*y

#num_l=[1,2,3,100]

# def reduce_test(func,array):

#     res=array[0]

#     for num in array:

#         res=func(res,num)

#     return res

# print(reduce_test(lambda x,y:x*y,num_l))

num_l=[1,2,3,100]

def reduce_test(func,array,init=None):

    # 代码中经常会有变量是否为None的判断，有三种主要的写法：

    # 第一种是

    # ` if x is None

    # `；

    # 第二种是

    # ` if not x：`；

    # 第三种是

    # ` if not x is None

    # `（这句这样理解更清晰

    # ` if not (x is None)

    # `）

    if  not init:#init是否为none

        res=array.pop(0)

    else:

        res=init

    for num in array:

        res=func(res,num)

    return res

print(reduce_test(lambda x,y:x*y,num_l,100))

from functools import reduce

#reduce函数:合并序列得出最终结果

print(reduce(lambda x,y:x*y,num_l,100))