save project

diy.py

@@ -8,5 +8,14 @@ url=r'c:\Users\ryc66\OneDrive - 6699e5\Desktop\1.txt'
 # file=open(url,"a",encoding="utf-8")
 # file.write('小明：10本\n')
 # file.close()
-with open(url,"a",encoding="utf-8") as file:
-    file.write('小红：13本\n')
\ No newline at end of file
+# with open(url,"a",encoding="utf-8") as file:
+#     file.write('小红：13本\n')
+new=""
+with open(url,"w+",encoding="utf-8") as file:
+    for i in file:
+        if '李文：9本' in i:
+            i=i.replace('李文：9本','李文：10本')
+        new+=i
+# print(new)        
+# with open(url,"w",encoding="utf-8") as file:
+    file.write(new)
\ No newline at end of file