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'
+new_data=""
+with open(r"D:\book.txt","r" ,encoding = "utf-8") as file1:
+   #file1.write('小丽:11本\n') 
+   #file1.write('李文:9本\n') 
+   #file1.write('张伟:16本\n') 
+   #file1.write('小兰:12本\n') 
+   for data in file1:
+        if '张伟:16本\n' in data:
+          data=data.replace("张伟:16本","张伟:17本")
+        if '小兰:12本\n' in data:
+          data=data.replace('小兰:12本','小兰:100000000本')
+        new_data+=data
+with open(r"D:\book.txt","w" ,encoding = "utf-8") as file1:
+  file1.write(new_data)
+with open(r"D:\book.txt","r" ,encoding = "utf-8") as file1:
+  a=file1.read()
+  print(a)
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