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'
+# 写入同学们的捐赠明细：'小兰：12本
+fut=open("C:\\Users\\Administrator\\Desktop\\mzl.txt","w",encoding="utf-8")
+fut.write("小兰：12本\n")
+fut.write("李明：12本\n")
+fut.write("小强：12本\n")
+fut.close()
+s=""
+with open("C:\\Users\\Administrator\\Desktop\\mzl.txt","r",encoding="utf-8") as fut:
+    # n=fut.read()
+    for i in fut:
+        if "小强：12本" in i:
+            i=i.replace("小强：12本","小强：11本")
+        print(i)                                   
+        s+=i
+
+
+with open("C:\\Users\\Administrator\\Desktop\\mzl.txt","w",encoding="utf-8") as fut:
+    fut.write(s)
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