auto save

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'
-# file=open(r'C:\Users\23016\Desktop\linnpin.txt','a',encoding='utf-8')
-# file.write('小兰:12本\n')
-# file.write('小强:15本\n')
-# file.write('李明:10本\n')
+# file=open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')
+# file.write('小强:10本\n')
+# file.write('李明:15本\n')
 # file.close()
 # file.close()
-with open(r'C:\Users\23016\Desktop\linnpin.txt','w',encoding='utf-8')as file:
-    file.write('小丽：11本\n')
-    file.write('李文：9本\n')
-    file.write('张伟：16本\n')
+
+# with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as file:
+#     a=file.read()
+#     print(a)
\ No newline at end of file
+    
+new=''
+with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if '小强：10本' in data:
+            data=data.replace('小强：10','小强：11')
+        new+=data
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as file:
+    file.write(new)
\ No newline at end of file