diff --git a/diy.py b/diy.py
new file mode 100644
index 0000000..c63ad33
--- /dev/null
+++ b/diy.py
@@ -0,0 +1,11 @@
+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11C:\本'、'李文：9本'、'张伟：16本'
+with open(r"C:\Users\玛酷4号\Documents\lesson12-1\diy.txt","r",encoding='utf-8') as file:
+    a = file.read()
+    for data in a:
+        if "小强" in data:
+            print("在")
+        else:
+            print("不在")
+
+
+
diff --git a/diy.txt b/diy.txt
new file mode 100644
index 0000000..509df01
--- /dev/null
+++ b/diy.txt
@@ -0,0 +1 @@
+小兰：12本小丽：11本