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'
+with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as a:
+    a.write("小兰：12本\n""小丽：11本\n""李文：9本\n""张伟：16本\n")
+
+new=""
+with open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8") as a:    
+    for i in a:
+        if"小兰：12本"in i:         
+            i=i.replace("小兰：12本","小兰：1000本")
+        new+=i        
+    print(new)
+   
+with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as a:
+    a.write(new)
\ No newline at end of file