save project

diy.py

@@ -4,5 +4,12 @@
 # file1.close()
 # flie1.write("小兰:12本小丽:11本李文:9本张伟:16本")
 
-with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
-    file1.write("小兰:12本\n小丽:11本\n李文:9本\n张伟:16本")
\ No newline at end of file
+# with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
+#     file1.write("小兰:12本\n小丽:11本\n李文:9本\n张伟:16本")
+
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
+    # a=file1.read()
+    # print(a)
+    for data in file1:
+        if '小强:10本' in data:
+            print('数据在文件中')
\ No newline at end of file