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:\Users\Administrator\Desktop\111.test.txt",'w',encoding="utf-8")
+# file1.write('小兰:12本\n')
+# file1.close()
+file1=open(r"C:\Users\Administrator\Desktop\111.test.txt",'a',encoding="utf-8")
+file1.write('小丽:11本\n')
+file1.close()
+# new_data=""
+# with open(r"C:\Users\Administrator\Desktop\111.test.txt",'r',encoding="utf-8") as file1:
+#     for data in file1:
+#         if '小丽:11本' in data:
+#             data=data.replace('小丽,11本','小丽,10本')
+#             new_data += data
+# with open(r"C:\Users\Administrator\Desktop\111.test.txt",'w',encoding="utf-8") as file1:
+#     file1.write(new_data)
+#         print(data)
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