cql2

Python library and command-line interface (CLI) for parsing and converting Common Query Language (CQL2), with Rust under the hood.

Usage

pip install cql2

Then:

expr = Expr("landsat:scene_id = 'LC82030282019133LGN00'")
# or
expr = cql2.parse_file("fixtures/text/example01.txt")

s = expr.to_text()
d = expr.to_json()
sql = expr.to_sql()
print("SQL query:", sql.query)
print("SQL params:", sql.params)

Or from via the command-line interface:

$ cql2 -o json "landsat:scene_id = 'LC82030282019133LGN00'"
{"op":"=","args":[{"property":"landsat:scene_id"},"LC82030282019133LGN00"]}

Developing

To install the package to your virtual environment and test:

maturin develop --uv -m python/Cargo.toml && pytest python

More information

This package is part of cql2-rs, see that repo for license and contributing information.

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Release history Release notifications | RSS feed

This release

0.5.7

Jul 29, 2026

0.5.6

May 8, 2026

0.5.5

Apr 22, 2026

0.5.4

Apr 21, 2026

0.5.3

Feb 4, 2026

0.5.2

Jan 16, 2026

0.4.2

Nov 12, 2025

0.4.1

Nov 2, 2025

0.4.0

Sep 16, 2025

0.3.8

Sep 9, 2025

0.3.7

May 19, 2025

0.3.7b0 pre-release

Mar 28, 2025

0.3.6

Mar 27, 2025

0.3.5

Mar 12, 2025

0.3.4

Feb 21, 2025

0.3.3

Feb 18, 2025

0.3.3a1 pre-release

Feb 18, 2025

0.3.3a0 pre-release

Feb 3, 2025

0.3.2

Dec 9, 2024

0.3.1

Nov 14, 2024

0.3.0

Oct 14, 2024

0.2.0

Oct 10, 2024

cql2 0.5.7

cql2

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