save project

diy.py

@@ -3,3 +3,7 @@ with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding="utf-8") as b1
     b1.write("小丽：11本\n")
     b1.write("李文：9本\n")
     b1.write("张伟：16本\n")
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding="utf-8") as b1:
+    for data in b1:
+        if'小丽：11本'in data:
+            print("数据在文件中")
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