save project

diy.py

@@ -7,6 +7,10 @@ with open(r"C:\Users\Administrator\Desktop\111.txt","w",encoding="utf-8")as w:
 with open(r"C:\Users\Administrator\Desktop\111.txt","a",encoding="utf-8")as s:
     s.write("小强：12本\n")
     s.write("李明：15本\n")
+with open(r"C:\Users\Administrator\Desktop\111.txt","r",encoding="utf-8")as a:
+    for i in a:
+        if "小强：12本" in i:
+            print("存在")