How do I overcome this concatenation issue?

Question

I am writing a code in python that's a function code that displays a welcome message to a user name's input. This is the code.
def welcome ( ):
print("Welcome," + name)
name = input( )
welcome( )
My code results: Welcome, input
Expected result: Welcome, input.
Please what adjustment would I do to achieve the expected result? If it's not a concatenation issue, please correct me where I'm getting it wrong.

Answer 1

Thank you Mirriele, I'm grateful.

Answer 2

Also it is adviced to make all declarations before defining a function