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.write('sbsbsbsbsbsbsbsbsbsbsbbsbsbsbsbsbsbsbsbsnsbbssbsbsbsbssbbsbsbbsbsbsbsbsbsbsbsbsbsbbsbsbsbsb')
+new_data=''
 with open(r"C:\Users\Windows\Desktop\test.txt",'r',encoding="utf-8") as file1:
     for data in file1:
             if'小强：10本'in data:
+                data = data.replace("小强：10本","小强：11本")
                 print("数据在文件中")
             else:
                 print("不在")
+            new_data = new_data+data
+with open(r"C:\Users\Windows\Desktop\test.txt",'w',encoding="utf-8") as file1:
+    file1.write(new_data)
\ No newline at end of file