save project

diy.py

@@ -7,17 +7,22 @@ f.write('张伟：16本\n')
 f.close()
 f.close()
 
 
 
 
-with open(r"C:\Users\windows\Desktop\text.txt","a",encoding="utf-8")
-f.write('小兰：19本\n')
-f.write('小丽：49本\n')
-f.write('文李：30本\n')
-f.write('张伟：1本\n')
-f.close()
+with open(r"C:\Users\windows\Desktop\text.txt","a",encoding="utf-8") as f:
+    f.write('小兰：19本\n')
+    f.write('小丽：49本\n')
+    f.write('文李：30本\n')
+    f.write('张伟：1本\n')
 
 
-with open(r"C:\Users\windows\Desktop\text.txt","r",encoding="utf-8")
-    a= f.read lines()
-    print(a)
-for i in a:    
+new_data=()
+with open(r"C:\Users\windows\Desktop\text.txt","r",encoding="utf-8") as f:
+    a= f.readlines()
     print(a)
     print(a)
-    if"小兰：本" in i:
-        print("数据在")
+    for i in a:    
+        print(a)
+        if"小兰:12本" in i:
+            print("数据在里面")
+            data=data.replace('小兰：12本','小兰298747本')
+        new_data=new_data+data    
+print (new_data)       
+with open(r"C:\Users\windows\Desktop\text.txt","w",encoding="utf-8")  as f:
+    f.write(new_data)
\ No newline at end of file