def __init__(self, data_=None, **attrs_):
    """Initializes the ModelBase instance.

    :data_: can be either a dictionary, another Model, or None. The instance is initialized from it.
    :attrs: are passed to the instance's update method after the instance is initialized from data_.
    """
    self._initialize_attributes(data_ or {})
    self.update(attrs_)
    self.errors = {}
def __init__ ( self , data_ = None , ** attrs_ ) : self . _initialize_attributes ( data_ or { } ) self . update ( attrs_ ) self . errors = { }
Initializes the ModelBase instance.

    :data_: can be either a dictionary, another Model, or None. The instance is initialized from it.
    :attrs: are passed to the instance's update method after the instance is initialized from data_.