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:\新建文件夹\test.txt","w",encoding="utf-8")as filel:
+    filel.write("大傻逼:9本")
+
+
+
+
+new_data=""
+with open (r"C:\新建文件夹\test.txt","r",encoding="utf-8")as filel:
+    for data in filel:
+        if "大傻逼:9本" in data:
+            data = data.replace("大傻逼:9本","大傻逼:11本")
+        new_data+=data
+
+with open (r"C:\新建文件夹\test.txt","w",encoding="utf-8")as filel:
+    filel.write(new_data)
+
+with open (r"C:\新建文件夹\test.txt","r",encoding="utf-8")as filel:
+    a=filel.read()
+    print(a)   
\ No newline at end of file