Libraries
126,529 public API signatures from 805 libraries, extracted by static analysis from the most downloaded PyPI packages.
Each page lists classes, functions and methods with their real signatures — argument names, default values, type annotations and return types — taken directly from the source, not recalled from memory.
Largest libraries
azure-sdk-for-python18,922 APIs · Azure/azure-sdk-for-pythongoogle-cloud-python5,684 APIs · googleapis/google-cloud-pythongoogle-ads-python3,019 APIs · googleads/google-ads-pythonairflow2,957 APIs · apache/airflowsympy2,716 APIs · sympy/sympyray2,389 APIs · ray-project/raypytorch2,282 APIs · pytorch/pytorchdulwich1,795 APIs · dulwich/dulwichspark1,743 APIs · apache/sparkpython-aiplatform1,707 APIs · googleapis/python-aiplatformtextual1,647 APIs · Textualize/textualllama_index1,625 APIs · run-llama/llama_indextwisted1,493 APIs · twisted/twistedlitellm1,490 APIs · BerriAI/litellmoffice365-rest-python-client1,375 APIs · vgrem/office365-rest-python-clientplotly.py1,337 APIs · plotly/plotly.pyjax1,336 APIs · jax-ml/jaxlangchain-community1,314 APIs · langchain-ai/langchain-communitymlflow1,300 APIs · mlflow/mlflowtensorflow1,282 APIs · tensorflow/tensorflowmypy1,215 APIs · python/mypysglang1,199 APIs · sgl-project/sglanglangchain1,071 APIs · langchain-ai/langchainpytorch-image-models1,051 APIs · huggingface/pytorch-image-modelswandb1,037 APIs · wandb/wandbdatadog-api-client-python981 APIs · DataDog/datadog-api-client-pythonopenai-python903 APIs · openai/openai-pythontransformers852 APIs · huggingface/transformerspolars821 APIs · pola-rs/polarspandas789 APIs · pandas-dev/pandasfaker765 APIs · joke2k/fakersqlalchemy761 APIs · sqlalchemy/sqlalchemymatplotlib748 APIs · matplotlib/matplotlibasyncssh715 APIs · ronf/asyncsshsphinx663 APIs · sphinx-doc/sphinxpygments588 APIs · pygments/pygmentsdjango571 APIs · django/djangokeras571 APIs · keras-team/kerascelery568 APIs · celery/celerymysql-connector-python558 APIs · mysql/mysql-connector-pythonscipy552 APIs · scipy/scipypydantic-ai531 APIs · pydantic/pydantic-aimypy_boto3_builder526 APIs · youtype/mypy_boto3_builderadk-python520 APIs · google/adk-pythonsdk-python513 APIs · temporalio/sdk-pythonmoto507 APIs · getmoto/motodd-trace-py495 APIs · DataDog/dd-trace-pystreamlit486 APIs · streamlit/streamlitpython-prompt-toolkit466 APIs · prompt-toolkit/python-prompt-toolkitcoveragepy465 APIs · coveragepy/coveragepyrich461 APIs · Textualize/richdnspython457 APIs · rthalley/dnspythonpython-sdk453 APIs · modelcontextprotocol/python-sdkfastmcp452 APIs · PrefectHQ/fastmcppython450 APIs · kubernetes-client/pythonnltk443 APIs · nltk/nltktwilio-python441 APIs · twilio/twilio-pythonatlassian-python-api439 APIs · atlassian-api/atlassian-python-apisagemaker-python-sdk437 APIs · aws/sagemaker-python-sdkansible433 APIs · ansible/ansiblepython-pptx433 APIs · scanny/python-pptxopenai-agents-python419 APIs · openai/openai-agents-pythonredis-py410 APIs · redis/redis-pymongo-python-driver408 APIs · mongodb/mongo-python-driverscikit-learn402 APIs · scikit-learn/scikit-learnastroid401 APIs · pylint-dev/astroidpylint398 APIs · pylint-dev/pylintnarwhals395 APIs · narwhals-dev/narwhalsholidays388 APIs · vacanza/holidaysfonttools386 APIs · fonttools/fonttoolspipelines383 APIs · kubeflow/pipelinesharness-sdk369 APIs · strands-agents/harness-sdkgraphql-core361 APIs · graphql-python/graphql-coreiceberg-python359 APIs · apache/iceberg-pythonelasticsearch-py344 APIs · elastic/elasticsearch-pykombu343 APIs · celery/kombulangsmith-sdk340 APIs · langchain-ai/langsmith-sdkxarray335 APIs · pydata/xarraybrowser-use331 APIs · browser-use/browser-usepygithub322 APIs · pygithub/pygithublanggraph321 APIs · langchain-ai/langgraphrdflib318 APIs · RDFLib/rdflibipython315 APIs · ipython/ipythonnumpy312 APIs · numpy/numpymultiprocess310 APIs · uqfoundation/multiprocesspymdown-extensions308 APIs · facelessuser/pymdown-extensionstornado306 APIs · tornadoweb/tornadogriffe303 APIs · mkdocstrings/griffepydantic300 APIs · pydantic/pydanticPillow297 APIs · python-pillow/Pillowpython-sdk283 APIs · yandex-cloud/python-sdkpsycopg278 APIs · psycopg/psycopgstripe-python278 APIs · stripe/stripe-pythonjinja272 APIs · pallets/jinjameson271 APIs · mesonbuild/mesongunicorn268 APIs · benoitc/gunicornaws-cli265 APIs · aws/aws-clipipenv265 APIs · pypa/pipenvdask255 APIs · dask/daskaiohttp251 APIs · aio-libs/aiohttppython-genai251 APIs · googleapis/python-genaifpdf2250 APIs · py-pdf/fpdf2websockets246 APIs · python-websockets/websocketssnowpark-python246 APIs · snowflakedb/snowpark-pythonlogfire239 APIs · pydantic/logfireXlsxWriter234 APIs · jmcnamara/XlsxWriterpyelftools233 APIs · eliben/pyelftoolsblack230 APIs · psf/blackaltair228 APIs · vega/altaircfn-lint227 APIs · aws-cloudformation/cfn-lintaws-sdk-pandas227 APIs · aws/aws-sdk-pandashuggingface_hub225 APIs · huggingface/huggingface_hubpython-docx224 APIs · python-openxml/python-docxdatamodel-code-generator218 APIs · koxudaxi/datamodel-code-generatorxgboost211 APIs · dmlc/xgboostdatasets207 APIs · huggingface/datasetspython-bigquery204 APIs · googleapis/python-bigquerypip203 APIs · pypa/pipWeasyPrint201 APIs · Kozea/WeasyPrintipykernel197 APIs · ipython/ipykerneljupyter_server197 APIs · jupyter-server/jupyter_serversqlglot195 APIs · tobymao/sqlglotspaCy194 APIs · explosion/spaCyjupyter_client194 APIs · jupyter/jupyter_clientsetuptools190 APIs · pypa/setuptoolsoptuna188 APIs · optuna/optunafastcore187 APIs · AnswerDotAI/fastcorevision186 APIs · pytorch/visioninstructor183 APIs · instructor-ai/instructormarkdown182 APIs · Python-Markdown/markdownsentry-python181 APIs · getsentry/sentry-pythonwerkzeug179 APIs · pallets/werkzeugjira179 APIs · pycontribs/jiraimageio177 APIs · imageio/imageiodocling176 APIs · docling-project/doclinggrpc173 APIs · grpc/grpcpython-telegram-bot173 APIs · python-telegram-bot/python-telegram-botsemgrep173 APIs · semgrep/semgreppycryptodome171 APIs · Legrandin/pycryptodomestatsmodels168 APIs · statsmodels/statsmodelsflake8166 APIs · pycqa/flake8python-future164 APIs · PythonCharmers/python-futureduckdb-python162 APIs · duckdb/duckdb-pythonbotocore158 APIs · boto/botocoreclient-python158 APIs · mistralai/client-pythongradio156 APIs · gradio-app/gradiopypdf156 APIs · py-pdf/pypdftrio156 APIs · python-trio/trioPyPDF2155 APIs · py-pdf/PyPDF2llama-parse-py153 APIs · run-llama/llama-parse-pysnowflake-connector-python152 APIs · snowflakedb/snowflake-connector-pythonpyspnego151 APIs · jborean93/pyspnegopyproj149 APIs · pyproj4/pyprojopentelemetry-python146 APIs · open-telemetry/opentelemetry-pythonpyvespa146 APIs · vespa-engine/pyvespagspread145 APIs · burnash/gspreadnetworkx144 APIs · networkx/networkxpyzmq143 APIs · zeromq/pyzmqLibCST140 APIs · Instagram/LibCSTcython140 APIs · cython/cythonposthog-python138 APIs · posthog/posthog-pythonmodal-client132 APIs · modal-labs/modal-clientarrow131 APIs · apache/arrowaws-crt-python130 APIs · awslabs/aws-crt-pythondatabricks-sql-python129 APIs · databricks/databricks-sql-pythonbabel129 APIs · python-babel/babelcyclopts128 APIs · BrianPugh/cycloptstyper127 APIs · fastapi/typerGitPython127 APIs · gitpython-developers/GitPythonstructlog127 APIs · hynek/structlogopensearch-py127 APIs · opensearch-project/opensearch-pytensorboard123 APIs · tensorflow/tensorboardnbformat121 APIs · jupyter/nbformatpymupdf121 APIs · pymupdf/pymupdftox121 APIs · tox-dev/toxhttpx2120 APIs · pydantic/httpx2PyAthena119 APIs · pyathena-dev/PyAthenayt-dlp119 APIs · yt-dlp/yt-dlphvac116 APIs · hvac/hvactraitlets116 APIs · ipython/traitletscurl_cffi116 APIs · lexiforest/curl_cffismart_open115 APIs · piskvorky/smart_opensoupsieve113 APIs · facelessuser/soupsieveagent-protocol112 APIs · langchain-ai/agent-protocoldocker-py111 APIs · docker/docker-pycyclonedx-python-lib110 APIs · CycloneDX/cyclonedx-python-libabseil-py110 APIs · abseil/abseil-pytomlkit107 APIs · python-poetry/tomlkitanyio106 APIs · agronholm/anyiopywin32106 APIs · mhammond/pywin32authlib105 APIs · authlib/authlibrequests105 APIs · psf/requeststestcontainers-python105 APIs · testcontainers/testcontainers-pythonhttpx104 APIs · encode/httpxalembic104 APIs · sqlalchemy/alembicPyAV103 APIs · PyAV-Org/PyAVpsutil103 APIs · giampaolo/psutilmkdocs103 APIs · mkdocs/mkdocsasyncio102 APIs · python/asyncioweaviate-python-client102 APIs · weaviate/weaviate-python-clientthinc101 APIs · explosion/thincopencensus-python100 APIs · census-instrumentation/opencensus-pythonwcmatch100 APIs · facelessuser/wcmatchgevent100 APIs · gevent/geventinvoke98 APIs · pyinvoke/invokedocket96 APIs · chrisguidry/docketclick95 APIs · pallets/clickzope.interface95 APIs · zopefoundation/zope.interfacedatadogpy94 APIs · DataDog/datadogpycheckov94 APIs · bridgecrewio/checkovqdrant-client94 APIs · qdrant/qdrant-clientpyopenssl92 APIs · pyca/pyopensslllvmlite91 APIs · numba/llvmlitekafka-python89 APIs · dpkp/kafka-pythonpython-oracledb89 APIs · oracle/python-oracledburllib389 APIs · urllib3/urllib3LightGBM88 APIs · lightgbm-org/LightGBMonnx88 APIs · onnx/onnxclaude-agent-sdk-python87 APIs · anthropics/claude-agent-sdk-pythonh5py87 APIs · h5py/h5pypyserial87 APIs · pyserial/pyserialydb-python-sdk86 APIs · ydb-platform/ydb-python-sdkgreat_expectations85 APIs · great-expectations/great_expectationspowertools-lambda-python84 APIs · aws-powertools/powertools-lambda-pythonfirebase-admin-python84 APIs · firebase/firebase-admin-pythonlangchain-google84 APIs · langchain-ai/langchain-googlepackaging84 APIs · pypa/packaginganthropic-sdk-python82 APIs · anthropics/anthropic-sdk-pythonaccelerate81 APIs · huggingface/accelerateseaborn80 APIs · mwaskom/seaborncleo80 APIs · python-poetry/cleopy-amqp79 APIs · celery/py-amqpfiletype.py78 APIs · h2non/filetype.pypendulum78 APIs · sdispater/pendulumWikipedia-API76 APIs · martin-majlis/Wikipedia-APIpython-gitlab76 APIs · python-gitlab/python-gitlabshap76 APIs · shap/shapmpmath75 APIs · mpmath/mpmathapscheduler74 APIs · agronholm/apschedulerscikit-image74 APIs · scikit-image/scikit-imageserverless-application-model73 APIs · awslabs/serverless-application-modeluniversal_pathlib72 APIs · fsspec/universal_pathlibparamiko72 APIs · paramiko/paramikopdfminer.six72 APIs · pdfminer/pdfminer.sixmkdocs-material72 APIs · squidfunk/mkdocs-materialjupyterlab71 APIs · jupyterlab/jupyterlabyarl69 APIs · aio-libs/yarlgeopy69 APIs · geopy/geopyjupyterlab_server69 APIs · jupyterlab/jupyterlab_servershapely69 APIs · shapely/shapelyagate69 APIs · wireservice/agatepydot68 APIs · pydot/pydotpython-slack-sdk68 APIs · slackapi/python-slack-sdkhatch67 APIs · pypa/hatchoauth2client66 APIs · google/oauth2clientonnxruntime66 APIs · microsoft/onnxruntimewtforms66 APIs · pallets-eco/wtformspyparsing66 APIs · pyparsing/pyparsinggenerative-ai-python65 APIs · google/generative-ai-pythonfactory_boy64 APIs · FactoryBoy/factory_boyjoblib64 APIs · joblib/joblibsetuptools-scm63 APIs · pypa/setuptools-scmcattrs63 APIs · python-attrs/cattrshypothesis62 APIs · HypothesisWorks/hypothesisflask62 APIs · pallets/flaskdistlib62 APIs · pypa/distlibsupabase-py62 APIs · supabase/supabase-pyjoserfc61 APIs · authlib/joserfcsendgrid-python61 APIs · sendgrid/sendgrid-pythongraphviz61 APIs · xflr6/graphvizwatchdog60 APIs · gorakhargosh/watchdogjsonpath-ng60 APIs · h2non/jsonpath-nglimits59 APIs · alisaifee/limitswcwidth59 APIs · jquast/wcwidthlark59 APIs · lark-parser/larkpathos59 APIs · uqfoundation/pathosasn1crypto58 APIs · wbond/asn1cryptoh257 APIs · python-hyper/h2mrab-regex56 APIs · mrabarnett/mrab-regexCairoSVG54 APIs · Kozea/CairoSVGjedi54 APIs · davidhalter/jedicuda-python53 APIs · NVIDIA/cuda-pythonclient_python53 APIs · prometheus/client_pythonaiomysql52 APIs · aio-libs/aiomysqlconfluent-kafka-python52 APIs · confluentinc/confluent-kafka-pythontifffile51 APIs · cgohlke/tifffilemarkdown-it-py51 APIs · executablebooks/markdown-it-pygoogle-api-python-client51 APIs · googleapis/google-api-python-clientgql51 APIs · graphql-python/gqlpython-diskcache50 APIs · grantjenks/python-diskcachepython-socketio50 APIs · miguelgrinberg/python-socketiopsycopg250 APIs · psycopg/psycopg2python-rsa50 APIs · sybrenstuvel/python-rsasqlparse49 APIs · andialbrecht/sqlparsedjango-rest-framework49 APIs · encode/django-rest-frameworkipywidgets49 APIs · jupyter-widgets/ipywidgetsGeoIP2-python49 APIs · maxmind/GeoIP2-pythonplatformdirs49 APIs · tox-dev/platformdirstqdm49 APIs · tqdm/tqdmbilliard48 APIs · celery/billiard
How these were collected
GitHub repositories are resolved from the most downloaded PyPI packages, then their Python sources are analysed. Test code, examples and vendored third-party libraries are excluded.