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\A2\Desktop\新建文件夹\book.txt","w",encoding="utf-8" )
-file1.write("misi兰:12")
-file1.write("米四李:11")
-file1.write("李:9")
-file1.write("张：16")
+# # 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\A2\Desktop\新建文件夹\book.txt","w",encoding="utf-8" )
+# file1.write("misi兰:12")
+# file1.write("米四李:11")
+# file1.write("李:9")
+# file1.write("张：16")
+new_data=''
+with open(r"C:\Users\A2\Desktop\新建文件夹\book.txt",'r',encoding="utf-8") as file1:
+    for data in file1:
+        if '张:16' in data:
+            data=data.replace("张:250","张:16")     
+        new_data+=data    
+with open(r"C:\Users\A2\Desktop\新建文件夹\book.txt",'w',encoding="utf-8") as file1:
+    file1.write(new_data)
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