{"library":"fsspec","type":"library","category":null,"description":"Filesystem Spec (fsspec) provides a unified, Pythonic interface to local, remote, and embedded file systems and bytes storage — including S3, GCS, Azure, HTTP, SFTP, memory, and more. It is the file-system abstraction layer used internally by Dask, pandas, PyArrow, Zarr, and many others. The current version is 2026.3.0, following a monthly calendar-versioning (CalVer) release cadence tied to the YYYY.MM.PATCH scheme.","language":"python","status":"active","version":"2026.3.0","tags":["filesystem","storage","s3","gcs","azure","cloud","io","dask","zarr","pyarrow","async","abstraction"],"last_verified":"Tue Jun 09","install":[{"cmd":"pip install fsspec","imports":["import fsspec\nwith fsspec.open('s3://bucket/file.txt', 'rt') as f: ...","import fsspec\nfs = fsspec.filesystem('s3', key='...', secret='...')","from fsspec.spec import AbstractFileSystem","from fsspec.asyn import AsyncFileSystem","from fsspec.implementations.local import LocalFileSystem","from fsspec.registry import known_implementations","from fsspec.registry import register_implementation\nregister_implementation('myproto', MyFS)","import fsspec\nmapper = fsspec.get_mapper('s3://bucket/path/')","from fsspec.core import OpenFile"]},{"cmd":"pip install fsspec[s3]","imports":[]},{"cmd":"pip install fsspec[gcs]","imports":[]},{"cmd":"pip install fsspec[ssh]","imports":[]},{"cmd":"pip install fsspec[full]","imports":[]}],"homepage":"https://filesystem-spec.readthedocs.io","github":"https://github.com/fsspec/filesystem_spec","docs":"https://filesystem-spec.readthedocs.io/en/latest/","changelog":"https://filesystem-spec.readthedocs.io/en/latest/changelog.html","pypi":"https://pypi.org/project/fsspec/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"compatibility":{"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":12.5,"avg_import_s":0.3,"wheel_type":"wheel"},"url":"https://checklist.day/v1/registry/fsspec/compatibility"}}