save project

diy.py

@@ -7,4 +7,9 @@ file1.write("张伟：16本\n")
 file1.close()
 
 with open(r"C:\Users\ColaMaster\Desktop\cola.txt","a",encoding="utf-8") as file2:
-    file2.write("大兰：200本\n")
\ No newline at end of file
+    file2.write("大兰：200本\n")
+
+with open(r"C:\Users\ColaMaster\Desktop\cola.txt","r",encoding="utf-8") as file3:
+    for data in file3:
+        if "大兰：200本\n" in data:
+            print("找到了")
\ No newline at end of file