使用python创建修改的txt文件

Question

我想知道如何修改文本文件。假设我有.txt之类的文件

1, yes, cool being
how, are you doing
see, you, you see them

我想创建一个新的/修改过的文件，其中

1
yes, cool being

how
are you doing 

see
you, you see them

我尝试了以下代码

wordlist = []
with open('scores.txt') as f:
    wordlist = [line.split(None, 1)[0] for line in f]
    print(wordlist[0]) # trying to see if the output was the way i wanted

Answer 1

因此，您希望在第一次出现,时split，并与一个换行符（\n）合并，然后再次将“段落”与一个换行符合并

wordlist = []
with open('scores.txt', 'r+') as f:
    origlist = ['\n'.join(line.split(',', 1)) for line in f]

    wordlist.append('\n'.join(origlist))
    print(wordlist[0])
    f.write(wordlist[0])  # write back to scores.txt file

产生

'1\n yes, cool being\n\nhow\n are you doing\n\nsee\n you, you see them'

（此解决方案建议不会按照您的要求在字符串末尾追加换行符。如果您正在运行windows，请将\n替换为\r\n，在MAC上，将\r替换为。）

Answer 2

with open('scores.txt') as f:
    lines = f.readlines()
    for line in lines:
        splited = line.split(', ') # Split
        first_word = splited[0]
        others = ', '.join(splited[1:]) # Put them back
        print (first_word)
        print (others)
        print () # Empty line

Answer 3

尝试：

file_in = open("input.txt","r")
file_out = open("output.txt","a")
line = file_in.readline()
while(line):
    file_out.write(line[0:line.index(',')]+"\n"+line[line.index(',')+1::]+"\n\n")
    line=file_in.readline()
file_in.close()
file_out.close()