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# Blueprints
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Blueprints allow you to organize your Flask application into modular components. They provide a way to group related views, templates, and static files.
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## Capabilities
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### Blueprint Class
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```python { .api }
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class Blueprint:
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    def __init__(
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        self,
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        name: str,
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        import_name: str,
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        static_folder: str | None = None,
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        static_url_path: str | None = None,
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        template_folder: str | None = None,
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        url_prefix: str | None = None,
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        subdomain: str | None = None,
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        url_defaults: dict | None = None,
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        root_path: str | None = None,
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        cli_group: str | None = None,
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    ): ...
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    def route(self, rule: str, **options) -> Callable: ...
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    def before_request(self, f: Callable) -> Callable: ...
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    def after_request(self, f: Callable) -> Callable: ...
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```
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## Usage Examples
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### Basic Blueprint
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```python
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from flask import Blueprint, render_template
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# Create blueprint
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auth_bp = Blueprint('auth', __name__, url_prefix='/auth')
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@auth_bp.route('/login')
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def login():
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    return render_template('auth/login.html')
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@auth_bp.route('/logout')
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def logout():
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    return 'Logged out'
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# Register with app
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app.register_blueprint(auth_bp)
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```