Concat /附加到Python中文本文件的特定行的末尾

Question

I need to add some text to the end of a specific line in a text file. I'm currently trying to use a method similar to this:

entryList = [5,4,3,8]
dataFile = open("file.txt","a+)
for i in dataFile:
     for j in entryList:
     lines[i] = lines[i].strip()+entryList[j]+" "
dataFile.write(lines[i])

I'd like to add the numbers immediately following the text.

Text file setup:

it is 
earlier it was 
before that it was 
later it will be 

Answer 1

您在问题中提到了特定的行，并且在代码中为每一行编写代码。

import fileinput

entryList = [5,4,3,8]

count = 0

for line in fileinput.FileInput('data.txt',inplace=1): print line+str(entryList[count])+" " count+=1

Answer 2

Reading from and then writing to the same file is not such a good idea. I suggest opening it as needed:

entryList = [5,4,3,8]

with open("file.txt", "r") as dataFile:
  # You may want to add '\n' at the end of the format string
  lines = ["{} {} ".format(s.strip(), i) for s,i in zip(dataFile, entryList)]

with open("file.txt", "w") as outFile:
  outFile.writelines(lines)