1.复习

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 name = 'alex' #name=‘lhf’

 def change_name():

     name='lhf'

     # global name

     # name = 'lhf'

     # print(name)

     # name='aaaa' #name='bbb'

     def foo():

         # name = 'wu'

         nonlocal name

         name='bbbb'

         print(name)

     print(name)

     foo()

     print(name)

 change_name()

2.匿名函数

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 # def calc(x):

 #     return x+1

 # res=calc(10)

 # print(res)

 # print(calc)

 # print(lambda x:x+1)

 # func=lambda x:x+1

 # print(func(10))

 # name='alex' #name='alex_sb'

 # def change_name(x):

 #     return name+'_sb'

 #

 # res=change_name(name)

 # print(res)

 # func=lambda x:x+'_sb'

 # res=func(name)

 # print('匿名函数的运行结果',res)

 # func=lambda x,y,z:x+y+z

 # print(func(1,2,3))

 # name1='alex'

 # name2='sbalex'

 # name1='supersbalex'

 # def test(x,y,z):

 #     return x+1,y+1  #----->(x+1,y+1)

 # lambda x,y,z:(x+1,y+1,z+1)

3.作用域

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 # def test1():

 #     print('in the test1')

 # def test():

 #     print('in the test')

 #     return test1

 #

 # # print(test)

 # res=test()

 # # print(res)

 # print(res()) #test1()

 #函数的作用域只跟函数声明时定义的作用域有关，跟函数的调用位置无任何关系

 # name = 'alex'

 # def foo():

 #     name='linhaifeng'

 #     def bar():

 #         # name='wupeiqi'

 #         print(name)

 #     return bar

 # a=foo()

 # print(a)

 # a() #bar()

4.函数式编程

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 #高阶函数1。函数接收的参数是一个函数名  2#返回值中包含函数

 # 把函数当作参数传给另外一个函数

 # def foo(n): #n=bar

 #     print(n)

 # #

 # def bar(name):

 #     print('my name is %s' %name)

 # #

 # # foo(bar)

 # # foo(bar())

 # foo(bar('alex'))

 #

 #返回值中包含函数

 # def bar():

 #     print('from bar')

 # def foo():

 #     print('from foo')

 #     return bar

 # n=foo()

 # n()

 # def hanle():

 #     print('from handle')

 #     return hanle

 # h=hanle()

 # h()

 #

 #

 #

 # def test1():

 #     print('from test1')

 # def test2():

 #     print('from handle')

 #     return test1()

4.map函数

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 # num_l=[1,2,10,5,3,7]

 # num1_l=[1,2,10,5,3,7]

 # ret=[]

 # for i in num_l:

 #     ret.append(i**2)

 #

 # print(ret)

 # def map_test(array):

 #     ret=[]

 #     for i in num_l:

 #         ret.append(i**2)

 #     return ret

 #

 # ret=map_test(num_l)

 # rett=map_test(num1_l)

 # print(ret)

 # print(rett)

 num_l=[1,2,10,5,3,7]

 #lambda x:x+1

 def add_one(x):

     return x+1

 #lambda x:x-1

 def reduce_one(x):

     return x-1

 #lambda x:x**2

 def pf(x):

     return x**2

 def map_test(func,array):

     ret=[]

     for i in num_l:

         res=func(i) #add_one(i)

         ret.append(res)

     return ret

 # print(map_test(add_one,num_l))

 # print(map_test(lambda x:x+1,num_l))

 # print(map_test(reduce_one,num_l))

 # print(map_test(lambda x:x-1,num_l))

 # print(map_test(pf,num_l))

 # print(map_test(lambda x:x**2,num_l))

 #终极版本

 def map_test(func,array): #func=lambda x:x+1    arrary=[1,2,10,5,3,7]

     ret=[]

     for i in array:

         res=func(i) #add_one(i)

         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)))

 msg='linhaifeng'

 print(list(map(lambda x:x.upper(),msg)))

5.filter函数

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 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

 #

 # res=filter_test(movie_people)

 # print(res)

 # 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(list(filter(lambda n:not n.endswith('sb'),movie_people)))

 res=filter(lambda n:not n.endswith('sb'),movie_people)

 print(list(res))

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

6.reduce函数

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 from functools import reduce

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

 #

 # res=0

 # for num in num_l:

 #     res+=num

 #

 # print(res)

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

 # def reduce_test(array):

 #     res=0

 #     for num in array:

 #         res+=num

 #     return res

 #

 # print(reduce_test(num_l))

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

 #

 # def multi(x,y):

 #     return x*y

 # lambda x,y:x*y

 #

 # 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))

 # 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

 # from functools import reduce

 # 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))

7.小结

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 #处理序列中的每个元素，得到的结果是一个‘列表’，该‘列表’元素个数及位置与原来一样

 # map()

 #filter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

 people=[

     {'name':'alex','age':1000},

     {'name':'wupei','age':10000},

     {'name':'yuanhao','age':9000},

     {'name':'linhaifeng','age':18},

 ]

 # print(list(filter(lambda p:p['age']<=18,people)))

 # print(list(filter(lambda p:p['age']<=18,people)))

 #reduce:处理一个序列，然后把序列进行合并操作

 from functools import reduce

 print(reduce(lambda x,y:x+y,range(100),100))

 # print(reduce(lambda x,y:x+y,range(1,101)))

8.内置函数

 #!/usr/bin/env python

 # -*- coding:utf-8 -*-

 # print(abs(-1))

 # print(abs(1))

 #

 # print(all([1,2,'1']))

 # print(all([1,2,'1','']))

 # print(all(''))

 # print(any([0,'']))

 # print(any([0,'',1]))

 # print(bin(3))

 #空，None，0的布尔值为False，其余都为True

 # print(bool(''))

 # print(bool(None))

 # print(bool(0))

 name='你好'

 # print(bytes(name,encoding='utf-8'))

 # print(bytes(name,encoding='utf-8').decode('utf-8'))

 # print(bytes(name,encoding='gbk'))

 # print(bytes(name,encoding='gbk').decode('gbk'))

 #

 # print(bytes(name,encoding='ascii'))#ascii不能编码中文

 #

 # print(chr(46))

 #

 # print(dir(dict))

 #

 # print(divmod(10,3))

 # dic={'name':'alex'}

 # dic_str=str(dic)

 # print(dic_str)

 #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('12sdfdsaf3123123sdfasdfasdfasdfasdfasdfasdfasdfasfasfdasdf'))

 # print(hash('12sdfdsaf31231asdfasdfsadfsadfasdfasdf23'))

 #

 name='alex'

 # print(hash(name))

 # print(hash(name))

 #

 #

 # print('--->before',hash(name))

 # name='sb'

 # print('=-=>after',hash(name))

 # print(help(all))

 #

 # print(bin(10))#10进制->2进制

 # print(hex(12))#10进制->16进制

 # print(oct(12))#10进制->8进制

 name='哈哈哈哈哈哈哈哈哈哈哈哈哈哈啊哈粥少陈'

 # print(globals())

 # print(__file__)

 #

 def test():

     age=''

     # print(globals())

     print(locals())

 #

 # test()

 #

 l=[1,3,100,-1,2]

 # print(max(l))

 # print(min(l))

 # print(isinstance(1,int))

 # print(isinstance('abc',str))

 print(isinstance([],list))

 # print(isinstance({},dict))

 print(isinstance({1,2},set))

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