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\book.txt','w',encoding='utf-8')
+file1.write('小兰,12本\n')
+file1.close()
+new_data="
+with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file:
+    file.write('李强,10本\n')
+
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if '李强,10本'in data:
+            data=data.replace('李强:10本','李强:11本')
+        new_data+=data
\ No newline at end of file