Kindly explain this error

[BlackList96]

I am a beginner in python programming. Kindly help me to sort out the error. When I write the below code in IDLE it is giving me the right answer. But when I write it in Visual Studio Code editor it is giving me an error given below.

def add(x, y):
    print("Sum= ", (x+y))
add(5,3)

Error:
C:/Users/user/AppData/Local/Programs/Python/Python37-32/python.exe c:/Users/user/Desktop/test.py
  File "<stdin>", line 1
    C:/Users/user/AppData/Local/Programs/Python/Python37-32/python.exe c:/Users/user/Desktop/test.py
      ^
SyntaxError: invalid syntax

I have already run very basic codes in VSCode but still getting this error for this code. Please explain this. Thanks in advance.