pyivt
pyivt is a library for Statistics Canada Beyond 20/20 .ivt files, written in Rust. It is designed to be minimal and easily adaptable for existing codebases. Key features are:
- Fast: Orders of magnitude faster than GUI automation for metadata
- Python: Easily integrates into modern data workflows with a minimal API
- Typed: Produces fully type-safe and predictable metadata
- Interoperable: Exports
.ivtfile data to Apache Arrow
Installation
uv add pyivt
Usage
Quick Start
Open an IVT file, read its metadata, and write its data to a Parquet file:
import pyarrow.parquet as pq
import pyivt
ivt = pyivt.open("data.ivt")
print(ivt.metadata.title.en)
pq.write_table(ivt.to_arrow(), "data.parquet")
Opening IVT Files
From Path
import pyivt
ivt = pyivt.open("data.ivt")
From URL
import requests
import pyivt
url = "https://example.com/data.ivt"
res = requests.get(url)
res.raise_for_status()
ivt = pyivt.open(res.content)
Reading Metadata
ivt.metadata is a typed IvtMetadata object. Summary fields are eager; heavy fields load on first access.
| Beyond 20/20 Summary | pyivt Metadata |
|---|---|
| Title | title.en, title.fr |
| Author | author.en, author.fr |
| Category | category.en, category.fr |
| Keywords | keywords.en, keywords.fr |
| Notes | notes.en, notes.fr |
| Number of Datapoints | number_of_datapoints |
| Time Series | time_series (.frequency, .start, .end) or None |
| Read-Only | read_only |
| Dimensions | dimensions |
| Geographies | geographies |
| Footnotes | footnotes |
| Missing Values | missing_values |
geographies is a Geographies object (member_id, geo_label, geo_uid, …), not a dict.
import pyivt
ivt = pyivt.open("data.ivt")
print(ivt.metadata.product_id, ivt.metadata.title.en)
Exporting Data
Ivt.to_arrow() returns an Apache Arrow table. Keyword arguments:
| Argument | Default | Meaning |
|---|---|---|
complete |
True |
Expand the published grid; set False for sparse decoded cells only |
max_cells |
100_000_000 |
Raise if the complete grid would exceed this many cells |
labels |
True |
Include dimension label columns |
language |
"en" |
Label language ("en" or "fr") |
import polars as pl
import pyarrow.parquet as pq
table = ivt.to_arrow()
# pandas
df = table.to_pandas()
# Parquet
pq.write_table(table, "data.parquet")
# Polars
df = pl.from_arrow(table)
License
pyivt is licensed under the MIT License.
Acknowledgements
1 maintainer
Metadata
1 maintainer
Release files for pyivt 0.0.2
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| pyivt-0.0.2.tar.gz | 100.5 kB | With provenance | Details |
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| pyivt-0.0.2-cp310-abi3-win_amd64.whl | CPython 3.10 | abi3 | Windows x86-64 | Details |
| pyivt-0.0.2-cp310-abi3-manylinux_2_28_x86_64.whl | CPython 3.10 | abi3 | Linux glibc 2.28+ x86-64 | Details |
| pyivt-0.0.2-cp310-abi3-manylinux_2_28_aarch64.whl | CPython 3.10 | abi3 | Linux glibc 2.28+ ARM64 | Details |
| pyivt-0.0.2-cp310-abi3-macosx_11_0_arm64.whl | CPython 3.10 | abi3 | macOS 11.0+ ARM64 | Details |
| pyivt-0.0.2-cp310-abi3-macosx_10_12_x86_64.whl | CPython 3.10 | abi3 | macOS 10.12+ x86-64 | Details |
Total release size: 6.9 MB
Release files / pyivt-0.0.2.tar.gz
| Download URL | pyivt-0.0.2.tar.gz |
|---|---|
| Size | 100.5 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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| Tags | CPython 3.10 Windows x86-64 abi3 |
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| Tags | CPython 3.10 Linux glibc 2.28+ x86-64 abi3 |
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