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\Administrator\Desktop\text.txt','w',encoding='utf-8')as file:
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as file:
     file.write('小兰：12本\n')
     file.write('小丽：11本\n')
-with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8')as file:
+with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8') as file:
     file.write('李文：9本\n')
     file.write('张伟：16本\n')
 dandan=""
-with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')as file:
-    for dandan in file:
-        if '张伟：16本' in dandan:
-            print('在')
-with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')as file:
-        dandan.replace('张伟：16本','张伟：17本')
\ No newline at end of file
+with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if '张伟：16本' in data:
+            data=data.replace('张伟：16本','张伟：17本')
+        dandan += data
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as file:
+    file.write(dandan) 
\ No newline at end of file