save project

diy.py

@@ -3,5 +3,9 @@ f1 = open(r'C:\Users\guanxue\Desktop\test.txt','w',encoding='utf-8')
 f1.write('小兰:12本、小丽:11本、李文:9本、张伟:16本\n')
 f1.close()
 with open(r'C:\Users\guanxue\Desktop\test.txt','a',encoding='utf-8')as f1:
-    f1.write('小强:12本\n')
-    f1.write('小明:15本\n')
\ No newline at end of file
+    f1.write('小强:10本\n')
+    f1.write('小明:15本\n')
+with open(r'C:\Users\guanxue\Desktop\test.txt','r',encoding='utf-8')as f1:
+    for data in f1:
+        if'小强:10本'in data:
+            print('在')
\ No newline at end of file