save project

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'
-file = open(r"C:\Users\玛酷机器人\Desktop\test.txt.txt",'a',encoding="utf-8")
+file = open(r"C:\Users\玛酷机器人\Desktop\test.txt",'a',encoding="utf-8")
 file.write("小丽：11本\n")
 file.write("小兰：12本\n")
 file.write("李文：9本\n")
 file.write("张伟：16本\n")
 file.close()
-with open(r"C:\Users\玛酷机器人\Desktop\test.txt.txt",'a',encoding="utf-8") as file
-    a=file.read()
-    print(a)
-    for data in a:
-        if "小红：18本"
-            print("数据在文件里")
-        else:
-            print("数据不在文件里")
\ No newline at end of file
+new_data=''
+with open(r"C:\Users\玛酷机器人\Desktop\test.txt",'r',encoding="utf-8") as file1:
+    for data in file1:
+        if '小红：18本' in data:
+            data=data.replace("张三：14本","张三:16本")
+    new_data+=data
\ No newline at end of file