save project

diy.py

@@ -2,10 +2,12 @@
 # with open(r'C:\Users\34353\Desktop\txt1.txt','a',encoding='utf-8') as file1:
 #     file1.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本')
 #     file1.write('\n小强：12本\n李明：15\n')
-
+a =''
 with open(r'C:\Users\34353\Desktop\txt1.txt','r',encoding='utf-8') as file1:
     for data in file1:
         if '小强：12本' in data:
-            print("小强在文件中")
-        if '小兰：12本' in data:
-            print('小兰在文件中')
\ No newline at end of file
+            data = data.replace("小强：12本",'小强：11本')
+        a+=data
+with open(r'C:\Users\34353\Desktop\txt1.txt','w',encoding='utf-8') as file1:
+    file1.write(a)
+        
\ No newline at end of file