import html as html_lib


def _attr_string(attrs, extra_style):
    parts = [f'style="{html_lib.escape(extra_style)}"']
    for k, v in attrs.items():
        if v in (None, "", False):
            continue
        parts.append(html_lib.escape(str(k)) if v is True else f'{html_lib.escape(str(k))}="{html_lib.escape(str(v))}"')
    return " ".join(parts)