auto save

.py

+new_data=""
+with open(r"C:\xuyuyang\test.txt","r",encoding="utf-8")as file1:
+    for data in file1:
+        if "小丽:11本" in data:
+            data = data.replace("小丽:11本","小丽:12本") 
+        new_data +=data
+
+with open(r"C:\xuyuyang\test.txt","w",encoding="utf-8")as file1:
+    file1.write(new_data)
+
+with open(r"C:\xuyuyang\test.txt","r",encoding="utf-8")as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file

。py

+++ "b/\343\200\202py"