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'
 # 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'
 # fell=open(r"C:\Users\23636\Desktop\toom.txt","w",encoding="utf-8")
 # fell=open(r"C:\Users\23636\Desktop\toom.txt","w",encoding="utf-8")
 # fell.write('小兰：12本\n')
 # fell.write('小兰：12本\n')
-# fell.write('小丽：11本\n')
+# fell.write('小强：10本\n')
 # fell.close()
 # fell.close()
 
 
+new_data=""
 with open(r"C:\Users\23636\Desktop\toom.txt","r",encoding="utf-8") as fell:
 with open(r"C:\Users\23636\Desktop\toom.txt","r",encoding="utf-8") as fell:
     for data in fell:
     for data in fell:
         if '小强: 10本' in data:
         if '小强: 10本' in data:
+            data=data.replace('小强：10本','小强：11本')
+        if '小兰:12本' in data:
             print('数据在文件中')
             print('数据在文件中')
-        if '小兰: 12本' in data:
-            print('数据在文件中')
+        new_data+=data
+with open(r"C:\Users\23636\Desktop\toom.txt","w",encoding="utf-8") as fell:
+    fell.write(new_data)
+
+
+