save project

diy.py

-#写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'文李：9本'、'张伟：16本'
-with open(r"C:\Users\windows\Desktop\捐赠.txt","w",encoding = "utf-8") as f:
-    f.write('小兰：12本\n')
-    f.write('小丽：11本\n')
-    f.write('文李：9本\n')
-    f.write('张伟：16本\n')
+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'文李：9本'、'张伟：16本'
+# with open(r"C:\Users\windows\Desktop\捐赠.txt","a",encoding = "utf-8")as f:
+#     f.write('小兰：12本\n')
+#     f.write('小丽：11本\n')
+#     f.write('文李：9本\n')
+#     f.write('张伟：16本\n')
 
-new_data = ""
-with open(r"C:\Users\windows\Desktop\捐赠.txt","r",encoding = "utf-8") as f:
+with open(r"C:\Users\windows\Desktop\捐赠.txt","r",encoding = "utf-8")as f:
     for data in f:
         if "小丽：11本" in data:
-            data=data.replace("小丽：11本","小丽：12本")
-        new_data  += data
-
-with open(r"C:\Users\windows\Desktop\捐赠.txt","w",encoding = "utf-8") as f:
-    f.write(new_data)
\ No newline at end of file
+            print("数据在文件中")
\ No newline at end of file