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\Administrator\Desktop\test.txt','w',encoding='utf-8')
#file1.write('小兰:12本')
#file1.write('小丽:11本')
#file1.write('李文:11本')
#file1.write('张伟:16本')
#file1.close()

#file1=(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')
#file1.write('小强:12本\n')
#file1.write('李明:15本\n')
#file1.cloes()

with open=(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file1:
    for i in fiel:
        if'小强=10本'in i:
            print ('数据在文件中')