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'
+# book=open(r"C:\Users\Administrator\Desktop\book.txt","w",encoding='UTF-8')
+# book.write('小兰：12本\n''小丽：11本\n''李文：9本\n''张伟：16本\n')
+# book.close()
+new_data=''
+with open(r"C:\Users\Administrator\Desktop\book.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：14本')  
+        new_data+=data
+print(new_data)
+with open(r"C:\Users\Administrator\Desktop\book.txt","w",encoding='UTF-8') as file:
+    file.write(new_data)
\ No newline at end of file