num_l=[1,2,10,5,3,7]# 计算该列表中数的平方值
方法一：
# ret=[]
# for i in num_l:
#     ret.append(i**2)
# print(ret)
方法二：
def map_test(array):ret=[]for i in num_l:ret.append(i**2)   #

return ret
ret=map_test(num_l)
print(ret)方法三：

num_l=[1,2,10,5,3,7]#lambda x:x+1def add_one(x):    return x+1#lambda x:x-1def reduce_one(x):    return x-1#lambda x:x**2def square_one(x):    return x**2def map_test(func,array):    ret=[]    for i in num_l:        res=func(i)        ret.append(res)    return retprint(map_test(add_one,num_l))print(map_test(reduce_one,num_l))#print(map_test(lambda x:x**2,num_l))print(map_test(square_one,num_l))

#终极版本num_l=[1,2,10,5,3,7]def map_test(func,array):    ret=[]    for i in num_l:        res=func(i) #add_one        ret.append(res)    return ret

print(map_test(lambda x:x+1,num_l))res=map(lambda x:x+1,num_l)print('内置函数map，处理结果',res)# for i in res:#     print(i)print(list(res))print('传的是有名函数',list(map(reduce_one,num_l)))

#大写转换msg='wuxiping'print(list(map(lambda x:x.upper(),msg)))

# movie_people=['sb_alex','sb_wupeiqi','linhaifeng','sb_yuanhao']
# def filter_test(array):
#     ret=[]
#     for p in array:
#         if not p.startswith('sb'):
#             ret.append(p)
#     return ret
# print(filter_test(movie_people))# movie_people=['alex_sb','wupeiqi_sb','linhaifeng','yuanhao_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
# res=filter_test(sb_show,movie_people)
# print(res)
#终极版本
movie_people=['alex_sb','wupeiqi_sb','linhaifeng','yuanhao_sb']
# def sb_show(n):
#     return n.endswith('sb')
#lambda n:n.endswith('sb')
def filter_test(func,array):ret=[]for p in array:if not func(p):ret.append(p)return ret
res=filter_test(lambda n:n.endswith('sb'),movie_people)
print(res)

#filter函数movie_people=['alex_sb','wupeiqi_sb','linhaifeng','yuanhao_sb']#print(filter(lambda n:n not n.endswith('sb',movie_people)))res=filter(lambda n:not n.endswith('sb'),movie_people)print(list(res))

from functools import reduce
# num_l=[1,2,3,100]
# res=0
# for num in num_l:
#     res+=num
# print(res)#相加
# num_l=[1,2,3,100]
# def reduce_test(array):
#     res=0
#     for num in num_l:
#         res+=num
#     return res
# print(reduce_test(num_l))#相乘
# num_l=[1,2,3,100]
# def reduce_test(func,array):
#     res=array.pop(0)
#     for num in array:
#         res=func(res,num)
#     return res
# print(reduce_test(lambda x,y:x*y,num_l))# 指定初始值
# num_l=[1,2,3,100]
# def reduce_test(func,array,init=None):
#     if init is 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))#reduce函数
num_l=[1,2,3,100]
print(reduce(lambda x,y:x+y,num_l,1))
print(reduce(lambda x,y:x+y,num_l,))

#总结：
# map函数：处理序列中的每个元素，得到的结果是一个‘列表’，该‘列表’元素个数和位置与原来一样
#filter函数：遍历序列中的每个元素，判断每个元素得到布尔值，如果是True则留下来得到的结果是一个‘列表’
# people=[{'name':'alex','age':10000},
#         {'name': 'wupeiqi', 'age': 10000},
#         {'name': 'yuanhao', 'age': 9000},
#         {'name': 'linhaifeng', 'age': 18},]
# print(list(filter(lambda p:p['age']<=18,people)))
#reduce函数：处理 一个序列，把序列进行合并操作
# num_l=[1,2,3,100]
# print(reduce(lambda x,y:x+y,num_l,1))
# print(reduce(lambda x,y:x+y,num_l,))

# print(abs(-1))
# print(all([1,2,'1']))#做布尔运算(所有的都是True才返回True)
# name='你好'
# print(bytes(name,encoding='utf-8'))   #编码，三个字节
# print(bytes(name,encoding='utf-8').decode('utf-8'))# 解码
# print(bytes(name,encoding='gbk'))#两个字节
# print(bytes(name,encoding='gbk').decode('gbk'))
# #print(bytes(name,encoding='ascii'))#ascii 不能编码中文
# print(chr(100))
# print(dir(all))
# print(divmod(10,3))
# dic={'name':'alex'}
# dic_str=str(dic)
# print(dic_str)
# print(eval(dic_str))eval()函数：以Python的方式解析并执行字符串，并将返回的结果输出
# d1=eval(dic_str)#把字符串中的数据结构给提取出来
# print(d1['name'])
# a='1+2*(3/3-1)-2'#把字符串中的表达式进行运算
# print(eval(a))
#可hash的数据类型即不可变数据类型，不可hash的数据类型即可变数据类型
# print(hash('dhfsaklefownfs2134254'))
# print(hash('-03thjsdnfkgqopw3utjlsdfml;'))
# name='alex'
# print(hash(name))
# print(hash(name))
# print(hash(name))
# print(help(dir))
# print(bin(10))  #10进制转换成2进制
# print(hex(12))   #16
# print(oct(12))   #8
# print(isinstance(1,int))
# print(isinstance('abc',int))
# print(isinstance('abc',str))
name='哈哈哈哈'
print(globals())
print(__file__)
print(locals())