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'
#file1=open(r'C:\Users\BBTC\Desktop\test.txt','w',encoding='utf-8')
#file1.write('A:12\n')
#file1.write('B:11\n')
#file1.write('C:9\n')
#file1.write('D:16\n')
#file1.close()
with open(r'C:\Users\BBTC\Desktop\test.txt','a',encoding='utf-8') as file:
    file.write('E:10\n')
    file.write('F:15\n')