# Configuration Schedulers from [SchedulerMixin](/docs/diffusers/main/en/api/schedulers/overview#diffusers.SchedulerMixin) and models from [ModelMixin](/docs/diffusers/main/en/api/models/overview#diffusers.ModelMixin) inherit from [ConfigMixin](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin) which stores all the parameters that are passed to their respective `__init__` methods in a JSON-configuration file. > [!TIP] > To use private or [gated](https://huggingface.co/docs/hub/models-gated#gated-models) models, log-in with `hf auth login`. ## ConfigMixin[[diffusers.ConfigMixin]] Base class for all configuration classes. All configuration parameters are stored under `self.config`. Also provides the [from_config()](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin.from_config) and [save_config()](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin.save_config) methods for loading, downloading, and saving classes that inherit from [ConfigMixin](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin). Class attributes: - **config_name** (`str`) -- A filename under which the config should stored when calling [save_config()](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin.save_config) (should be overridden by parent class). - **ignore_for_config** (`list[str]`) -- A list of attributes that should not be saved in the config (should be overridden by subclass). - **has_compatibles** (`bool`) -- Whether the class has compatible classes (should be overridden by subclass). - **_deprecated_kwargs** (`list[str]`) -- Keyword arguments that are deprecated. Note that the `init` function should only have a `kwargs` argument if at least one argument is deprecated (should be overridden by subclass). - **pretrained_model_name_or_path** (`str` or `os.PathLike`, *optional*) -- Can be either: - A string, the *model id* (for example `google/ddpm-celebahq-256`) of a pretrained model hosted on the Hub. - A path to a *directory* (for example `./my_model_directory`) containing model weights saved with [save_config()](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin.save_config). - **cache_dir** (`str | os.PathLike`, *optional*) -- Path to a directory where a downloaded pretrained model configuration is cached if the standard cache is not used. - **force_download** (`bool`, *optional*, defaults to `False`) -- Whether or not to force the (re-)download of the model weights and configuration files, overriding the cached versions if they exist. - **proxies** (`dict[str, str]`, *optional*) -- A dictionary of proxy servers to use by protocol or endpoint, for example, `{'http': 'foo.bar:3128', 'http://hostname': 'foo.bar:4012'}`. The proxies are used on each request. - **output_loading_info(`bool`,** *optional*, defaults to `False`) -- Whether or not to also return a dictionary containing missing keys, unexpected keys and error messages. - **local_files_only** (`bool`, *optional*, defaults to `False`) -- Whether to only load local model weights and configuration files or not. If set to `True`, the model won't be downloaded from the Hub. - **token** (`str` or *bool*, *optional*) -- The token to use as HTTP bearer authorization for remote files. If `True`, the token generated from `diffusers-cli login` (stored in `~/.huggingface`) is used. - **revision** (`str`, *optional*, defaults to `"main"`) -- The specific model version to use. It can be a branch name, a tag name, a commit id, or any identifier allowed by Git. - **subfolder** (`str`, *optional*, defaults to `""`) -- The subfolder location of a model file within a larger model repository on the Hub or locally. - **return_unused_kwargs** (`bool`, *optional*, defaults to `False) -- Whether unused keyword arguments of the config are returned. - **return_commit_hash** (`bool`, *optional*, defaults to `False) -- Whether the `commit_hash` of the loaded configuration are returned.`dict`A dictionary of all the parameters stored in a JSON configuration file. Load a model or scheduler configuration. - **config** (`dict[str, Any]`) -- A config dictionary from which the Python class is instantiated. Make sure to only load configuration files of compatible classes. - **return_unused_kwargs** (`bool`, *optional*, defaults to `False`) -- Whether kwargs that are not consumed by the Python class should be returned or not. - **kwargs** (remaining dictionary of keyword arguments, *optional*) -- Can be used to update the configuration object (after it is loaded) and initiate the Python class. `**kwargs` are passed directly to the underlying scheduler/model's `__init__` method and eventually overwrite the same named arguments in `config`.[ModelMixin](/docs/diffusers/main/en/api/models/overview#diffusers.ModelMixin) or [SchedulerMixin](/docs/diffusers/main/en/api/schedulers/overview#diffusers.SchedulerMixin)A model or scheduler object instantiated from a config dictionary. Instantiate a Python class from a config dictionary. Examples: ```python >>> from diffusers import DDPMScheduler, DDIMScheduler, PNDMScheduler >>> # Download scheduler from huggingface.co and cache. >>> scheduler = DDPMScheduler.from_pretrained("google/ddpm-cifar10-32") >>> # Instantiate DDIM scheduler class with same config as DDPM >>> scheduler = DDIMScheduler.from_config(scheduler.config) >>> # Instantiate PNDM scheduler class with same config as DDPM >>> scheduler = PNDMScheduler.from_config(scheduler.config) ``` - **save_directory** (`str` or `os.PathLike`) -- Directory where the configuration JSON file is saved (will be created if it does not exist). - **push_to_hub** (`bool`, *optional*, defaults to `False`) -- Whether or not to push your model to the Hugging Face Hub after saving it. You can specify the repository you want to push to with `repo_id` (will default to the name of `save_directory` in your namespace). - **kwargs** (`dict[str, Any]`, *optional*) -- Additional keyword arguments passed along to the [push_to_hub()](/docs/diffusers/main/en/api/schedulers/overview#diffusers.utils.PushToHubMixin.push_to_hub) method. Save a configuration object to the directory specified in `save_directory` so that it can be reloaded using the [from_config()](/docs/diffusers/main/en/api/configuration#diffusers.ConfigMixin.from_config) class method. - **json_file_path** (`str` or `os.PathLike`) -- Path to the JSON file to save a configuration instance's parameters. Save the configuration instance's parameters to a JSON file. `str`String containing all the attributes that make up the configuration instance in JSON format. Serializes the configuration instance to a JSON string.