auto save

diy.py

+# 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'
+file1=open(r"C:\panyuxuan\test.txt",'a',encoding='utf-8')
+file1.write("李明：15本\n")
+# file1.write("小强：10本\n")
+file1.close()
+
+# with open(r"C:\panyuxuan\test.txt","a",encoding='utf-8') as file1:
+#     file1.write("李明：15本\n")
+#     file1.write("小强：10本\n")
+# with open(r"C:\panyuxuan\test.txt","r",encoding='utf-8') as file1:
+#     for data in file1:
+#         if "小强：10本" in data:
+#             print("在")