save project

diy.py

 with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as a:
-    new_a=''
+    n=''
+    b=''
     for a_1 in a:
         if '小强:10本' in a_1:
             b=a_1.replace('小强:10本','小强:11本')
-            new_a+=b
-            print(new_a)
+        n+=b
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as a:
+    a.write(n)
+