day 7 作业

# # str --> utf-8
s1 = 'www中国'
b1 = s1.encode('utf-8')
print(b1)

# str --> gbk
s1 = 'www中国'
b1 =s1.encode('gbk')
print(b1)

# utf-8 -->bytes
b3 = b'wwwxe4xb8xadxe5x9bxbd'
s = b3.decode('utf-8')
print(s)  #www中国

#gbk -->bytes
b4 = s.encode('gbk')
print(b4)  #b'wwwxd6xd0xb9xfa'

f = open(r"D:a.txt",'r',encoding = 'utf-8')
print(f.read())
f.close()


f1 = open('r模式',encoding = 'utf-8')
for line in f1:
    print(line)
f1.close()

with open('timg.jpg',mode = 'rb') as f3:
    content=f3.read()
with  open('timg2.jpg',mode = 'wb') as f4:
    f4.write(content)
f3.close()
f4.close()