save project

diy.py

@@ -11,11 +11,11 @@ with open(r'C:\Users\BBTC\Desktop\test.txt','r',encoding='utf-8') as a:
     for date in a:
         if "D:10" in date:
             date=date.replace('D:10','D:11')
-        new_date + = date
+        new_date += date
 
-with open(r'C:\Users\BBTC\Desktop\test.txt','r',encoding='utf-8') as a:
+with open(r'C:\Users\BBTC\Desktop\test.txt','w',encoding='utf-8') as a:
     a.write(new_date)
 
 with open(r'C:\Users\BBTC\Desktop\test.txt','r',encoding='utf-8') as a:
-    a=a.read()
+    b=a.read()
     print(a)
\ No newline at end of file