save project

diy.py

@@ -3,12 +3,16 @@ file1=open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')
 file1.write('小兰:12本\n')
 file1.close()
 with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8')as file1:
-    file1.write('小强:12本\n')
+    file1.write('小强:10本\n')
     file1.write('李明:15本\n')
+new_data=''
 with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')as file1:
     for data in file1:
         if'小兰:12本'in data:
-            print("有")
-        if'小强:12本'in data:
-            print("有")   
-        
\ No newline at end of file
+            data=data.replace('小兰:12本','小兰:14本')
+        if'小强:10本'in data: 
+            data=data.replace('小强:10本','小强:11本')
+        new_data+=data
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')as file1:
+    file1.write(new_data)
+    print(new_data)
\ No newline at end of file