Contents Menu Expand Light mode Dark mode Auto light/dark, in light mode Auto light/dark, in dark mode Skip to content
colstore 0.5.2
colstore 0.5.2

User guide

  • Performance & internals
  • Format interop

Reference

  • API reference
    • colstore.open
    • colstore.ColStoreReader
    • colstore.ColumnView
    • colstore.TableView
    • colstore.info
    • colstore.schema
    • colstore.ColStoreInfo
    • colstore.store
    • colstore.create
    • colstore.recreate
    • colstore.update
    • colstore.ColStoreWriter
    • colstore.compact
    • colstore.ColStoreDataset
    • colstore.concat
    • colstore.append
    • colstore.appender
    • colstore.Appender
    • colstore.ColStoreFrame
    • colstore.col
    • colstore.convert
    • colstore.saveas
    • colstore.to_root
    • colstore.from_parquet
    • colstore.from_feather
    • colstore.from_json
    • colstore.from_npz
    • colstore.from_hdf
    • colstore.from_root
    • colstore.calibrate
    • colstore.ensure_calibrated
    • colstore.set_max_workers
    • colstore.get_max_workers
    • colstore.set_gather_thread_cap
    • colstore.get_gather_thread_cap
    • colstore.set_default_backend
    • colstore.get_default_backend
    • colstore.set_default_madvise
    • colstore.get_default_madvise
    • colstore.max_threads
    • colstore.cpp_available
    • colstore.use_passive_openmp_wait
    • colstore.FormatError
    • colstore.QueryError

Development

  • UX series
  • colstore Performance Optimization Series: Reference Summary
  • Round 1 — Stages 1–6
  • Round 2 — Stages 7–12
  • Round 3 — Defaults, placement validation, and filesystem portability
  • Round 4 — Read-path Python offloads
  • Round 5 — Edit-path mask routing and cache-resident streaming
  • Round 6 — Overlapping the streaming write with compute
  • Round 7 — One gather, layout specializations, and the bandwidth-bound frontier
  • Net effect
  • Rejected alternatives (do not re-propose without new evidence)
  • Open / deferred items (recorded reasons)
  • Gather diagnostics
  • Valgrind leak checking
Back to top
View this page
Edit this page

colstore.from_json¶

colstore.from_json(source, dest, **kwargs)[source]¶

Import a JSON file into a .cstore (convert(..., format="json")).

Parameters:
  • source (str | PathLike[str])

  • dest (str | PathLike[str])

  • kwargs (Any)

Return type:

ColStoreReader

Next
colstore.from_npz
Previous
colstore.from_feather
Copyright © 2026, Alkaid Cheng
Made with Sphinx and @pradyunsg's Furo
Last updated on 2026-07-15
On this page
  • colstore.from_json
    • from_json()