save project

diy.py

@@ -4,6 +4,15 @@
 # file.write("李文：9本\n")
 # file.write("张伟：16本\n")
 # file.close()
-with open(r'c:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file:
-    file.write("小强：12本\n")
-    file.write("李明：11本\n")
\ No newline at end of file
+
+# with open(r'c:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file:
+#     file.write("小强：12本\n")
+#     file.write("李明：11本\n")
+# with open(r'c:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file:
+#      a=file.read()
+#      print(a)
+with open(r'c:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file: 
+    for data in file:
+        if "小强：12本" in data:
+            print("数据在文件中")
+