oxid-frame

A small columnar frame for oxid's rust projects. One engine, three places: a program oxid aot compiles calls the crate directly, CPython imports it as a PyO3 extension module (this wheel), and a page reaches it as WebAssembly (oxid.frame).

from oxid_frame import read_csv

f = read_csv(text)
by = f.where_gt("temp_max", 25.0).group(["weather"]).mean("temp_max")
print(by.strings("weather"), by.floats("temp_max"))

• Three column types, each nullable: f64, i64 and str. read_csv infers them (an empty field is null, a quoted "" the empty string); add_floats/add_ints/add_strings build a frame from lists; add_date_part(name, source, "year"|"month"|"day") takes one part of a YYYY-MM-DD column.
• select, head, tail, sort (stable, nulls last), where_eq/ne/lt/le/gt/ge, where_among, where_is, where_in: a selection shares the columns and copies no value.
• group(keys) then count, sum, mean, min, max: groups in the order their first row appears. A float sum is CPython's own sum() (compensated, in row order), so a result equals the plain-Python computation on every target.
• floats/ints/strings(name) read a column out; to_csv() writes floats as Python's repr.
• Every error is a ValueError naming the column. free() releases a frame in a page (which has no finaliser) and does nothing here.

Under CPython: pip install oxid-frame (Python 3.14+). In an oxid rust project: [tool.oxid.crates] oxid_frame = { version = "0.1", package = "oxid-frame", pypi = "oxid-frame" }.

Apache-2.0, © Optersoft.