# 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'
# laoshi = open(r"C:\Users\Administrator\Desktop\sb.txt","w",encoding='utf-8')
# laoshi.write('小兰：12本\n')
# laoshi.write('小丽：11本\n')
# laoshi.write('李文：9本\n')
# laoshi.write('张伟：16本\n')
# laoshi.write('傅正一：9999本\n')
# laoshi.close()

# with open(r"C:\Users\Administrator\Desktop\sb.txt","a",encoding='utf-8') as sb:
#     sb.write('小强:12本\n')
#     sb.write('李明:15本\n')
new_i=''
with open(r"C:\Users\Administrator\Desktop\sb.txt","r",encoding='utf-8') as read:
    for i in read:
        if '小强:12本' in i:
            print(1)
            i = i.replace('小强:10本','小强:11本')
        if '小兰：12本' in i:
            print(2)
            i = i.replace('小兰:12本','小兰:14本')
        new_i+=i
with open(r"C:\Users\Administrator\Desktop\sb.txt","w",encoding='utf-8') as write:
    write.write(new_i)