python学习笔记（一）：文件操作

【注】在文件已经存在时，对文件进行输入；否则，创建文件并对文件进行写入操作！

#!/user/bin/env/python

'''Please input the filename'''

filename = raw_input("Please input the fileName:")

import os

if os.path.exists(filename):

    print("What the filename you have inputed have been exist,and you will append into the file %s\n" %filename)

    f = open(filename,'a')

else:

    print("That File not exists!And will create one automatic!")

    f = open(filename,'w')

i = 0

while i < 2:

    i+=1

    input_str = raw_input("Please input the string what you want to save into the file %s\t" %filename)

    f.write(str(input_str)+"\n")

f.close()