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'、'小丽：11本'、'李文：9本'、'张伟：16本'
+f=open(r"C:\Users\双师05\Desktop\text.txt","w",encoding="utf-8")
+f.write('小兰:12本,小丽:11本,李文:9本,张伟:16本')
+f.close()
+
+with open(r"C:\Users\双师05\Desktop\text.txt","a",encoding="utf-8") as f:
+    f.write('小兰:10本,小丽:11本,李文:20000000000本,张伟:100本')
+new_data=""
+with open(r"C:\Users\双师05\Desktop\text.txt","r",encoding="utf-8") as f:
+    a=f.readlines()
+    print(a)
+    for data in a:
+        print(a)
+        if "小兰:12本" in data:
+            print("数据在里面")
+            data = data.replace("小兰:12本","小兰:324本")
+        new_data =new_data+data
+print (new_data)
+with open(r"C:\Users\双师05\Desktop\text.txt","w",encoding="utf-8") as f:
+    f.write(new_data)
+