save project

diy.py

@@ -2,5 +2,9 @@
 # a=open(r'D:\DESK\test.txt',"w",encoding="utf-8")
 # a=open(r'D:\DESK\test.txt',"w",encoding="utf-8")
 # a.write("小丽：11本")
 # a.write("小丽：11本")
 # a.write("张伟：16本\n")
 # a.write("张伟：16本\n")
-with open(r'D:\DESK\test.txt',"a",encoding="utf-8") as a:
-    a.write("小兰：12本\n")
+# with open(r'D:\DESK\test.txt',"a",encoding="utf-8") as a:
+#     a.write("小兰：12本\n")
+with open(r'D:\DESK\test.txt',"r",encoding="utf-8") as a:
+    for data in a:
+        if "小兰：12本" in data:
+            print("数据在文件中")