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'
+# file1=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
+# file1.write('小兰：12本\n')
+# file1.write('小丽:11本\n')
+# file1.close()
+a=''
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as file1:
+    for da in file1: 
+        if'小强:10本' in da:
+            da=da.replace('小强:10本','小强:11本')
+        a=a+da
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')as file1:
+    file1.write(a)