在看django里面的代码，有几个地方看不懂，哪位大侠指点一下，谢谢
本帖最后由 liaozd 于 2014-11-11 16:21 编辑class AbstractUser(AbstractBaseUser, PermissionsMixin):
"""
An abstract base class implementing a fully featured User model with
admin-compliant permissions.
Username, password and email are required. Other fields are optional.
"""
##### 这里的_('username')等，为什么前面要加下划线呢？ #####
username = models.CharField(_('username'), max_length=30, unique=True,
help_text=_('Required. 30 characters or fewer. Letters, digits and '
'@/./+/-/_ only.'),
validators=[
validators.RegexValidator(r'^[\w.@+-]+, _('Enter a valid username.'), 'invalid')
])
first_name = models.CharField(_('first name'), max_length=30, blank=True)
last_name = models.CharField(_('last name'), max_length=30, blank=True)
email = models.EmailField(_('email address'), blank=True)
.....
.....
class Meta: ##### 这个Meta在这里是起什么作用，我记得python类好像没有这么定义的 #####
verbose_name = _('user')
verbose_name_plural = _('users')
abstract = True
def get_full_name(self):
"""
Returns the first_name plus the last_name, with a space in between.
"""
full_name = '%s %s' % (self.first_name, self.last_name)
return full_name.strip()
......
......
class User(AbstractUser):
"""
Users within the Django authentication system are represented by this
model.
Username, password and email are required. Other fields are optional.
"""
class Meta(AbstractUser.Meta):
swappable = 'AUTH_USER_MODEL' ##### 这里是要做什么？不是很懂了 #####
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