python map函数filter函数 day16

筛选

movie_people = ['sb_alex','sb_wupeiqi','linhaifeng','sb_yuanhao']
#
# ret = []
# for p in movie_people:
#     if not p.startswith('sb'):
#         ret.append(p)
# print(ret)
def filter_test(array):
    ret = []
    for p in array:
        if not p.startswith('sb'):
            ret.append(p)
    return ret
print(filter_test(movie_people))

进阶版

movie_people = ['sb_1','sb_2','3','sb_4']
def sb_show(n):
    return n.startswith('sb')
def filter_test(func,array):
    ret = []
    for p in array:
        if not func(p):
            ret.append(p)
    return ret
res = filter_test(sb_show,movie_people)
print(res)

filter，后面传到前面。运算得出布尔值，为ture保留，false不保留。