(arg1, arg2)
return str(arg1) + str(arg2)
concatenate arg1 & arg2
concatenate arg1 & arg2
concatenate arg1 & arg2
def addstr(arg1, arg2):
    """concatenate arg1 & arg2"""
    return str(arg1) + str(arg2)
def addstr ( arg1 , arg2 ) : return str ( arg1 ) + str ( arg2 )