Build an RPG character

full_dot = '●'
empty_dot = '○'

def create_character(name, strength, intelligence, charisma):
    if not isinstance(name, str):
        return 'The character name should be a string'

    if name == '':
        return 'The character should have a name'

    if len(name) > 10:
        return 'The character name is too long'

    if name.find(' ') > -1:
        return 'The character name should not contain spaces'

    if not isinstance(strength, int) or not isinstance(intelligence, int) or not isinstance(charisma, int):
        return 'All stats should be integers'

    if strength < 1 or intelligence < 1 or charisma < 1:
        return 'All stats should be no less than 1'

    if strength > 4 or intelligence > 4 or charisma > 4:
        return 'All stats should be no more than 4'


    if strength + intelligence + charisma != 7:
        return 'The character should start with 7 points'

    strength_displayed = "STR " + (full_dot * strength + (empty_dot * (10 - strength))) + "\n"
    intelligence_displayed = "INT " + (full_dot * intelligence + (empty_dot * (10 - intelligence))) + "\n"
    charisma_displayed = "CHA " + (full_dot * charisma + (empty_dot * (10 - charisma)))

    return "ren\n" + strength_displayed + intelligence_displayed + charisma_displayed

character = create_character('ren', 4, 2, 1)
print(f"Character '{character}' is 'ren\nSTR ●●●●○○○○○○\nINT ●●○○○○○○○○\nCHA ●○○○○○○○○○'?")