Python django.core.validators 模块，_lazy_re_compile() 实例源码

def validate_skype(value):
    value = force_text(value)
    skype_regex = _lazy_re_compile(r'[a-zA-Z][\w,.-]+$')

    if skype_regex.match(value):
        return True

    raise ValidationError(_("Invalid Skype username"))

def validate_telegram(value):
    value = force_text(value)
    telegram_regex = _lazy_re_compile(r'@[a-zA-Z]\w+[a-zA-Z0-9]$')

    if telegram_regex.match(value):
        return True

    raise ValidationError(_("Invalid Telegram username"))