作业2.26

# f=open('a.py','w') #w表示以只读的方式打开文件
# f.write("adsadasd")
# f.close()

# f=open('G:\\a.txt','r')
# content=f.read()
# print(content)
# content=f.readline()
# print(content,end="")
# content=f.readline()
# print(content)
# content=f.readlines()
# print(content)
#
# f.close()

# f=open('G:\\a.txt','a')     #w覆盖  a追加 r只读   r+读写，不创建  w+写  a+附加写
# # f.write('北京\n')
# # f.write('南京')
# f.write('\n海纳百川')
# f.close()

# f=open('G:\\a.txt',"r")
# print(f.tell())
# x=f.read(4)
# print(x)
# print(f.tell())
# f.seek(2,0)
# y=f.read(4)
# print(y)
# f.close()
import os
# os.mkdir("目录",0x777)
# p=os.getcwd()
# print(p)
# os.rmdir("目录")

# b=os.path.exists("fuxi.py")
# print(b)

'''b=os.path.exists("a")
print(b)
# os.makedirs("a\\b\\c")
os.removedirs("a\\b\\c")'''


import copy
# a=3
# b=3
# print(a==b)
# print(id(a)==id(b))

'''a=[1,2,3]
b=[1,2,3]
print(a==b)
print(id(a)==id(b))

c=a
print(id(c)==id(a))

a.append(4)
print(c)'''

# a=3
# b=a
# a=4
# print(b)

'''a=3
b=copy.copy(a)
c=copy.deepcopy(a)
print(a,b,c)
print(id(a)==id(b)==id(c))'''

'''a=[1,2,3,[4,5,6]]
b=a
c=copy.copy(a)
d=copy.deepcopy(a)
print(id(a))
print(id(c))
print(id(d))
a[3].append(99)
print(a)
print(c)
print(d)'''



#a=(1,2,3)
# b=iter(a)
# print(type(b))
# print(next(b))
# print(next(b))
# print(next(b))

'''def hanshu(n):       #迭代器
    for i in range(n):
        yield i
a=hanshu(10000)
print(next(a))
print(next(a))
print(next(a))'''

'''def fbnq(n):
    a,b=0,1
    for i in range(n):
        a,b=b,a+b
        yield a

f=fbnq(10)
for x in f:
    print(x)'''

'''def a(b):
    b()
def x():
    print("1234")
a(x)'''

'''import time
def hx(f):
    def neibu():
        start=time.time()
        f()
        end=time.time()
        print(end-start)
    return neibu
@hx
def jisuan():
    print("12345")
jisuan()
@hx'''

import time
'''def wb(fz):
    def nb(n):
        print("*****************")
        fz(n)
        print("*****************")
    return nb
def dd(nz):
    def bw(x):
        print("#################")
        nz(x)
        print("#################")
    return bw
@dd
@wb
def ych(name):
    print(name,"买了否冷")
ych("蒋博文")'''

def hanshu(b):
    #闭包
    a=3
    def nb(c):
        d=a*b+c
        return d
    return nb
x=hanshu(4)
print(x(5))
print(x(6))