save project

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'
 # 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\book.txt','w',encoding='utf-8')
 file1 = open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
-file1.write('123456\n')
-file1.write('qqdwdwd')
+file1.write('小兰：13本\n')
 file1.close()
 file1.close()
 
 
 with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
 with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
     file1.write('小强：10本\n')
     file1.write('小强：10本\n')
-    file1.write('李明：15本\n')
+    file1.write('李明：15本\n')
\ No newline at end of file
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+       if '小强' in data:
+          print("小强在文件中")
\ No newline at end of file