save project

diy.py

@@ -2,7 +2,13 @@
 # abc=open(r"C:\Users\XMBC\Desktop\test.txt",'w',encoding="utf-8")
 # abc.write("小兰：12本、小丽：11本、李文：9本、张伟：16本")
 # abc.close()
+new_data=""
 with open(r"C:\Users\XMBC\Desktop\test.txt",'r',encoding="utf-8") as abc:
-    for a in abc:
-        if "小兰：12本" in a:
-            print("数据在里面")
+    for data in abc:
+        if "小兰：12本" in data:
+            data=data.replace("小兰：12本","小兰：13本")
+        new_data+=data
+        print(new_data)
+with open(r"C:\Users\XMBC\Desktop\test.txt",'w',encoding="utf-8") as abc:
+    abc.write(new_data)
+