feat: add stepfun integrations

docs/docs/api_reference/llms/stepfun.md

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+::: llama_index.llms.stepfun
+    options:
+      members:
+        - StepFun

llama-index-integrations/llms/llama-index-llms-stepfun/.gitignore

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+llama_index/_static
+.DS_Store
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+bin/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+etc/
+include/
+lib/
+lib64/
+parts/
+sdist/
+share/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+.ruff_cache
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+notebooks/
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+pyvenv.cfg
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# Jetbrains
+.idea
+modules/
+*.swp
+
+# VsCode
+.vscode
+
+# pipenv
+Pipfile
+Pipfile.lock
+
+# pyright
+pyrightconfig.json

llama-index-integrations/llms/llama-index-llms-stepfun/BUILD

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+poetry_requirements(
+    name="poetry",
+)

llama-index-integrations/llms/llama-index-llms-stepfun/Makefile

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+GIT_ROOT ?= $(shell git rev-parse --show-toplevel)
+
+help:	## Show all Makefile targets.
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[33m%-30s\033[0m %s\n", $$1, $$2}'
+
+format:	## Run code autoformatters (black).
+	pre-commit install
+	git ls-files | xargs pre-commit run black --files
+
+lint:	## Run linters: pre-commit (black, ruff, codespell) and mypy
+	pre-commit install && git ls-files | xargs pre-commit run --show-diff-on-failure --files
+
+test:	## Run tests via pytest.
+	pytest tests
+
+watch-docs:	## Build and watch documentation.
+	sphinx-autobuild docs/ docs/_build/html --open-browser --watch $(GIT_ROOT)/llama_index/

llama-index-integrations/llms/llama-index-llms-stepfun/llama_index/llms/stepfun/BUILD

@@ -0,0 +1 @@
+python_sources()

llama-index-integrations/llms/llama-index-llms-stepfun/llama_index/llms/stepfun/__init__.py

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+from llama_index.llms.stepfun.base import StepFun
+
+__all__ = ["StepFun"]

llama-index-integrations/llms/llama-index-llms-stepfun/llama_index/llms/stepfun/base.py

@@ -0,0 +1,61 @@
+from typing import Any, Dict, Optional
+
+from llama_index.core.base.llms.types import LLMMetadata
+from llama_index.core.bridge.pydantic import Field
+from llama_index.core.constants import (
+    DEFAULT_CONTEXT_WINDOW,
+    DEFAULT_NUM_OUTPUTS,
+    DEFAULT_TEMPERATURE,
+)
+from llama_index.core.base.llms.generic_utils import get_from_param_or_env
+from llama_index.llms.openai_like import OpenAILike
+
+DEFAULT_API_BASE = "https://api.stepfun.com/v1"
+DEFAULT_MODEL = "step-1v-8k"
+
+
+class StepFun(OpenAILike):
+
+    model: str = Field(
+        description="The Stepfun model to use. See https://platform.stepfun.com/docs/llm/modeloverview for options."
+    )
+    context_window: int = Field(
+        default=DEFAULT_CONTEXT_WINDOW,
+        description="The maximum number of context tokens for the model. See https://platform.stepfun.com/docs/llm/modeloverview for options.",
+        gt=0,
+    )
+    is_chat_model: bool = Field(
+        default=True,
+        description=LLMMetadata.model_fields["is_chat_model"].description,
+    )
+
+    def __init__(
+        self,
+        model: str = DEFAULT_MODEL,
+        temperature: float = DEFAULT_TEMPERATURE,
+        max_tokens: int = DEFAULT_NUM_OUTPUTS,
+        additional_kwargs: Optional[Dict[str, Any]] = None,
+        max_retries: int = 5,
+        api_base: Optional[str] = DEFAULT_API_BASE,
+        api_key: Optional[str] = None,
+        **kwargs: Any,
+    ) -> None:
+        additional_kwargs = additional_kwargs or {}
+
+        api_base = get_from_param_or_env("api_base", api_base, "STEPFUN_API_BASE")
+        api_key = get_from_param_or_env("api_key", api_key, "STEPFUN_API_KEY")
+
+        super().__init__(
+            model=model,
+            temperature=temperature,
+            max_tokens=max_tokens,
+            api_base=api_base,
+            api_key=api_key,
+            additional_kwargs=additional_kwargs,
+            max_retries=max_retries,
+            **kwargs,
+        )
+
+    @classmethod
+    def class_name(cls) -> str:
+        return "Stpefun_LLM"

llama-index-integrations/llms/llama-index-llms-stepfun/pyproject.toml

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+[build-system]
+build-backend = "poetry.core.masonry.api"
+requires = ["poetry-core"]
+
+[tool.codespell]
+check-filenames = true
+check-hidden = true
+skip = "*.csv,*.html,*.json,*.jsonl,*.pdf,*.txt,*.ipynb"
+
+[tool.llamahub]
+contains_example = false
+import_path = "llama_index.llms.stepfun"
+
+[tool.llamahub.class_authors]
+StepFun = "llama-index"
+
+[tool.mypy]
+disallow_untyped_defs = true
+exclude = ["_static", "build", "examples", "notebooks", "venv"]
+ignore_missing_imports = true
+python_version = "3.8"
+
+[tool.poetry]
+authors = ["Bestony <[email protected]>"]
+description = "llama-index llms stepfun integration"
+exclude = ["**/BUILD"]
+license = "MIT"
+name = "llama-index-llms-stepfun"
+readme = "README.md"
+version = "0.3.1"
+
+[tool.poetry.dependencies]
+python = ">=3.9,<4.0"
+llama-index-llms-openai-like = "^0.3.1"
+llama-index-core = "^0.12.0"
+
+[tool.poetry.group.dev.dependencies]
+ipython = "8.10.0"
+jupyter = "^1.0.0"
+mypy = "0.991"
+pre-commit = "3.2.0"
+pylint = "2.15.10"
+pytest = "7.2.1"
+pytest-mock = "3.11.1"
+ruff = "0.0.292"
+tree-sitter-languages = "^1.8.0"
+types-Deprecated = ">=0.1.0"
+types-PyYAML = "^6.0.12.12"
+types-protobuf = "^4.24.0.4"
+types-redis = "4.5.5.0"
+types-requests = "2.28.11.8"
+types-setuptools = "67.1.0.0"
+
+[tool.poetry.group.dev.dependencies.black]
+extras = ["jupyter"]
+version = "<=23.9.1,>=23.7.0"
+
+[tool.poetry.group.dev.dependencies.codespell]
+extras = ["toml"]
+version = ">=v2.2.6"
+
+[[tool.poetry.packages]]
+include = "llama_index/"

llama-index-integrations/llms/llama-index-llms-stepfun/tests/test_llms_stepfun.py

@@ -0,0 +1,7 @@
+from llama_index.core.base.llms.base import BaseLLM
+from llama_index.llms.stepfun import StepFun
+
+
+def test_text_inference_embedding_class():
+    names_of_base_classes = [b.__name__ for b in StepFun.__mro__]
+    assert BaseLLM.__name__ in names_of_base_classes