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'
-#
-with open(r"C:\\Users\\1\\Desktop\\中幼\\test.txt","r",encoding="utf-8") as file1:
+new_data=''
+with open(r'C:\\Users\\1\\Desktop\\中幼\\test.txt','r',encoding='utf-8') as file1:
       for data in file1:
-            if"小里:11"in data:
-                print("在数据中")
+            if'小里:11'in data:
+                data=data.replace('小里:11','小里:10')
             if'小红:12本'in data:
-                print("在数据中")
+                data=data.replace('小红:12本\n','小红:14本\n')
+            new_data +=data
+with open(r'C:\Users\1\Desktop\中幼\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+with open(r'C:\Users\1\Desktop\中幼\test.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)
       # file1.write('小红：12本\n')
       # file1.write('小里：11\n')
       # file1.write('李文：9本\n')