学习笔记：第二天

文件操作

with open('day2','w',encoding='utf-8') as f:
    f.write('ndjafnglsf马翁')
with open('day2','r+',encoding='utf-8') as e:
    print(e.read())
    data = e.truncate(4)
    print(data)
with open('day2','rb')as g:
    h =g.read()
    print(h)
    print(h.decode('utf-8'))
with open('day2','wb')as i :
    i.write(bytes('阿瑟东',encoding='utf-8'))
with open('day2','r',encoding='utf-8') as e:
    print(e.read())
    e.seek(3)
    print(e.tell())