diy.py

# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
# file=open(r"C:\Users\Administrator\Desktop\新建文件夹\tas.txt","w",encoding="utf-8")
# file.write('小兰：12本')
# file.write('小丽：11本')
# file.write('李文：9本')
# file.write('张伟：16本')
# file.close()
# with open(r"C:\Users\Administrator\Desktop\新建文件夹\tas.txt","a",encoding="utf-8") as file:
#     file.write("小强：12本")
#     file.write("李明：15本")
with open(r"C:\Users\Administrator\Desktop\新建文件夹\tas.txt","a",encoding="utf-8") as file:
    for i in file:
       if "小强：12本" in i:
           p