python文件的操作2

Posted 2020-11-10 yang30293316

哦哦哈嘿嘿嘿嘿

f=open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘)
ff=f.read(3)
print(ff)
f.close()
#哦哦哈
-----------------------------------------------------------------------------------------

f=open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘)#附近的二哥
f.seek(3)#utf格式，一个中文3个字节，前面怀疑空一个.
ff=f.read()
print(ff)
f.close()
附近的二哥

f=open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘)
f.seek(6)
ff=f.read()
print(ff)
f.close()

近的二哥
--------------------------------------------------------------------------

附近的二哥哈

f=open("d:\a100.txt",mode="a+",encoding=‘UTF-8‘)
f.write("哈")
g=f.tell()
f.seek(g-3)
ff=f.read()
print(ff)
f.close()
#哈
------------------------------------------------------------------------------

f=open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘)

ff=f.readlines()
print(ff)
f.close()

[‘ufeff附近的二哥哈
‘, ‘日出香炉生紫嫣
‘, ‘元靠谱不挂前程
‘]

------------------------------------------------------------------------------

f=open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘)

for i in f:
    print(i)

附近的二哥哈

日出香炉生紫嫣

元靠谱不挂前程

--------------------------------------------------

with open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘) as ff:
    print(ff.read())

附近的二哥哈
日出香炉生紫嫣
元靠谱不挂前程

----------------------------------------------------------------------------------------------

打开多个文件

with open("d:\a100.txt",mode="r+",encoding=‘UTF-8‘) as ff,
     open("d:\a101.txt",mode="r+",encoding=‘UTF-8‘)  as ff1:

    print(ff.read(),ff1.read())

附近的二哥哈
日出香炉生紫嫣
元靠谱不挂前程

 

日照香炉
生紫烟