save project

diy.py

@@ -6,4 +6,6 @@ with open(r'C:\Users\admin\Desktop\gyytyty.txt','r',encoding='utf-8') as f:
     for dat in f:
         if "小强:10本\n" in dat:
             print("在这里")
-
+            dat.replace("小强:10本\n","小强:11本\n")
+with open(r'C:\Users\admin\Desktop\gyytyty.txt','w',encoding='utf-8') as f:
+    f.write(dat)
\ No newline at end of file