diff --git a/diy.py b/diy.py
new file mode 100644
index 0000000..78c75d4
--- /dev/null
+++ b/diy.py
@@ -0,0 +1,22 @@
+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+#打开、创建文件
+# file1 = open(r'C:\Users\31267\Documents\test.txt','w',encoding='utf-8')
+# #写入数据
+# file1.write('小兰:12本\n')
+# file1.write('小丽:11本\n')
+# file1.write('李文:9本\n')
+# file1.write('张伟:16本\n')
+# #关闭文件
+# file1.close()
+file1 = open(r'C:\Users\31267\Documents\test.txt','w',encoding='utf-8')
+file1.write('小强:10本\n')
+file1.write('李明:11本\n')
+file1 = open(r'C:\Users\31267\Documents\test.txt','a',encoding='utf-8')
+file1.write('小兰:12本\n')
+file1.close()
+with open(r'C:\Users\31267\Documents\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强:10本' in data:
+            print('小强数据在文件中')
+        if '小兰:12本' in data:
+            print('小兰数据在文件中')
diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..a698470
--- /dev/null
+++ b/diy2.py
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+#补充捐赠明细，两种写法：
+
+#补充数据的第一种写法：
+file1= open(r'C:\Users\31267\Documents\test.txt','w',encoding='utf-8')
+file1.write('小强：10本\n') 
+file1.write('李明：15本\n')
+file1.close()
+
+# 补充数据的第二种写法：
+with open(r'C:\Users\31267\Documents\test.txt','a',encoding='utf-8') as file1:
+    file1.write('小强：10本\n') 
+    file1.write('李明：15本\n')