day1.py

#filel = open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')
#a = filel.read()
#print(a)
#filel.close()


#with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as filel:
    #a = filel.read()
    #print(a)

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