auto save

diy.py

+new_data=""
+with open(r"C:\朱信诺哈哈哈\test.txt","r",encoding="utf-8")as file1:
+    for data in file1:
+            if "小丽:10本" in data:
+                data=data.replace("小丽:10本","小丽:12本")
+            new_data +=data
+
+with open(r"C:\朱信诺哈哈哈\test.txt","w",encoding="utf-8")as file1:
+    file1.write(new_data)
+
+with open(r"C:\朱信诺哈哈哈\test.txt","r",encoding="utf-8")as file1:
+    a=file1.read()
+    print(a)
+
+
+
+
+
+
+
+
+file1=open(r"C:\朱信诺哈哈哈\test.txt","w",encoding="utf-8")
+file1.write("小丽:10本\n")
+file1.write("小强:12本\n")
+file1.close()
+
+
+
+with open(r"C:\朱信诺哈哈哈\test.txt","r",encoding="utf-8")as file1:
+    for data in file1:
+            if "小丽:10本" in data:
+                print("在数据中")
+
+
+
+
+
+
+
+
+
+

sales_list.txt

+悟空 12 15 11 12 11 12 13 21 27 12 15 30 22 26 15 12 21 23 27 11
+诺依 21 29 15 21 21 21 29 30 12 13 12 12 24 52 27 26 15
+小贝 29 11 11 15 13 15 13 11 11 29 13 11 
+李丽 13 15 20 15 15 11 17 20 20 11 12 12 20
+宋扬 11 11 11 11 15 17 11 20 
+王明 30 27 26 24 29 12 15 11 22 26 23 
+李强 12 12 11 15 11 13 25 26 11 13 15
+孙小白 25 26 12 15 27 30 48 39
+苏琪 15 11 15 15 30 13 27 11 
+刘若若 11 11 13 11 20 15 13 29 24 
+刘阳 11 15 22 11 23 26 22 15 17 52 12
+王胜男 27 15 15 26 13 12 15
+王娇 12 11 12 12 15 35 23 11
\ No newline at end of file