Python Basic Text Read and write __python

Today came across a requirement to read a TXT document that contains multiple lines of numbers, sort each line of numbers, and then write to a new TXT document. Although this demand is not difficult to solve, but in the actual processing process, encountered a lot of pits, recorded here for reference. 1. Read the text document:

As shown in the following illustration:
2. Implementation code:

#-*-Coding:utf-8-*-
"" "
Created on Tue Mar 19:48:58 2017 @author: Zch" "" "",
Read more from the A.txt file Row numbers, sorted in units of behavior, are written to the B.txt file
"" "

def ReadFile ():
    data = []
    f = open (' c:\\users\\administrator\\ Desktop\\a.txt ')
    #读入多行数字, first convert the read string format number to int by using the map function,
    #然后将数字list化, add to the data, and form a two-dimensional list of
    F.readlines ():
        data.append (List (Int,line.split (",")))
    print (data)
    f.close ()
    return Data

def writefile ():
    w = open ("C:\\users\\administrator\\desktop\\b.txt", "W")
    #构建一个for循环, The one-dimensional list in data is then sorted, and then the B.txt is written in the for-
    i in data:
        output = sorted (i)
        w.writelines (str (output) + "\ n")
        print (output)
    w.close ()

if __name__ = = ' __main__ ':
    #readFile ()
    WriteFile ()

3. Write a new text document: