Python排列列表并将其写回文件

我正在尝试制作一个脚本来查找文本文档中符号 {} 之间的所有内容。它采用 {} 中的 .txt 文档特定部分并按字母顺序对其进行组织，然后将其写回文本文档。文本文档示例..

bla bla bla  
bla ba bl bla ba bl {apple:banana, this: something else, airplane:hobby} 
bla bla bla  
bla bla bla  

期望的输出(按字母顺序排序)..

bla bla bla  
bla ba bl bla ba bl {airplane:hobby, apple:banana, this: something else} 
bla bla bla  
bla bla bla  

还在打印什么..

    bla bla bla  
    bla ba bl bla ba bl {apple:banana, this: something else, airplane:hobby} 
    bla bla bla  
    bla bla bla  

我的代码..

def openFind(): 
    f = open(inFile, 'r') 
    lines = f.read() 
    match = re.findall(r'{(.*?)}', lines) 
    before = str(match) 
    n=1 
    for i in xrange(0, len(match), n): 
        mydict =  match[i:i+n] 
        for x in sorted(mydict): 
            c = x.split(',') 
            newmatch = sorted(c) 
            final =  str(newmatch) 
            print final 
 
            # NOT WORKING BELOW!!! Stuck in loop? 
            with open(outFile,'w') as new_file: 
                with open(inFile) as old_file: 
                    for line in old_file: 
                        new_file.write(line.replace(before, after)) 

它将排序/按字母顺序排列的列表打印为 [airplane:hobby, apple:banana, this: something else]，但如何用它来替换文本文档中的原始文本？必须到位，但可以创建新的 txt。

请您参考如下方法:

这应该有效:

import re 
 
def openFind(): 
    with open("test.txt", "r") as in_file: 
        data = in_file.read() 
 
    def sub(m): 
        l = [s.strip() for s in m.group(1).split(",")] 
        l.sort() 
        return "{%s}" % (", ".join(l),) 
 
    replacement = re.sub(r'{(.*?)}', sub, data) 
    with open("out.txt", "w") as out_file: 
        out_file.write(replacement) 

我用过re.sub()以便替换为已排序的就地匹配项。