代碼-修改TXT文件中部分內容

修改TXT文件中部分內容

Id: 1
ASIN: 0827229534
title: Patterns of Preaching: A Sermon Sampler
group: Book
salesrank: 396585
similar: 5 0804215715 156101074X 0687023955 0687074231 082721619X
categories: 2
|Books[283155]|Subjects[1000]|Religion & Spirituality[22]|Christianity[12290]|Clergy[12360]|Preaching[12368]
|Books[283155]|Subjects[1000]|Religion & Spirituality[22]|Christianity[12290]|Clergy[12360]|Sermons[12370]
reviews: total: 2 downloaded: 2 avg rating: 5
2000-7-28 cutomer: A2JW67OY8U6HHK rating: 5 votes: 10 helpful: 9
2003-12-14 cutomer: A2VE83MZF98ITY rating: 5 votes: 6 helpful: 5
以上是我的m.txt文件中的內容，我想將該文件中的avg rating:替換為avg:求Python具體代碼

最佳回答：

with open('m.txt', 'r') as f1:
    txt = f1.read()
    txt.replace('avg rating:', 'avg:')
with open('m1.txt' , 'w') as f2:
    f2.write(txt)