Validation checking

[Help_me_Please]

Why doesn't returning the parameters fix my issue?

def is_valid_location(column, column_choice, invalid):
    if (column-1) < column_choice < (column+1):
        NO_of_spaces_left = NO_of_spaces_left - 1 
        invalid = False
    else:
        invalid = True
    return column
    return column_choice
    return invalid