save project

diy.py

@@ -5,10 +5,18 @@
 # with open(r"C:\Users\周子轩\Desktop\test.txt","r",encoding="utf-8")  as file:
 #     a=file.read()
 # print(a)
-with open() as file:
+new_date=''
+with open(r"C:\Users\周子轩\Desktop\test.txt","r",encoding="utf-8") as file:
     a=file.read()
     for i in a:
-        if i=="小强：20本":
-            print("数据在文件中")
-        if i=="小兰：12本":
+        if i=="小强：15本":
             print("数据在文件中")
+        # if i=="小兰：12本":
+        #    print("数据在文件中") 
+        new_date=repiace
+for i in a: 
+    if i=="小强：20本":
+        i.repiace("小强：20本","小强：15本")
+    new_date+=i
+with open(w"C:\Users\周子轩\Desktop\test.txt","r",encoding="utf-8") as filel: 
+