save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：本9'、'张伟：16本'
 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：本9'、'张伟：16本'
-
-with open(r"C:\Users\chen\Desktop\text.txt",'w'',encoding='utf-8')as file:
-    file.write
-
-             
-    
+# with open(r"C:\Users\chen\Desktop\text.txt",'r',encoding='utf-8')as file:
+#     for data  in file:
+#         if '小兰:12本' in data:
+#             print('在') 
+new_data=''
+with open(r"C:\Users\chen\Desktop\text.txt",'r',encoding='utf-8')as file:
+    for data  in file:
+        if '小兰:12本' in data:
+            data=data.replace('小兰:12本','小兰:32本')
+        new_data+=data
+with open(r"C:\Users\chen\Desktop\text.txt",'w',encoding='utf-8')as file:
+    file.write(new_data)
+with open(r"C:\Users\chen\Desktop\text.txt",'r',encoding='utf-8')as file:
+    a=file.read()
+    print(a)