save project

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:11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")