officework

xlsx and docx engines that do not destroy your forms, plus a bridge that drives a running office app from Python — the way xlwings drives Excel, but on your own machine and without Excel.

Written in Rust (15,000+ lines, 240+ tests), exposed to Python through PyO3.

日本語の説明は GitHub にあります (Japanese documentation on GitHub): README.ja.md

Install

$ pip install officework

Wheels are abi3 (CPython 3.10+), so one wheel per platform covers every version; Linux, macOS and Windows are published. The engine needs no app installed — only the bridge does. pandas is imported only if you ask for it (pip install officework[pandas]).

Three ways in

from officework import sheet             # the engine — no app needed
b = sheet.Book.open("form7.xlsx")
s = b["quote"]
s["A30"] = "Nihon Funen Co., Ltd."       # borders, merges, widths stay intact
s["C30"] = "=B30*100"                    # a formula; recalculated on the spot
s.insert_row(30)                         # remaining formulas follow the move
b.save("out.xlsx")                       # shapes and print setup carried over

from officework import doc               # the engine — docx, no app needed
d = doc.Doc.open("report.docx")
print(d.unsupported)                     # anything it could not read, never dropped in silence
d.replace("Old Name Ltd.", "New Name Ltd.")   # per-run formatting is left alone
d[3].text = "replaced"                   # the paragraph stays a heading, stays aligned
print(d.tables[0][1][2].text)            # table, row, cell
d.save("out.docx")                       # styles, headers, shapes, tracked changes carried over

from officework import calc as xw        # the bridge — drives the running app
import pandas as pd

wb = xw.Book()                           # a blank workbook comes up
wb.sheets.active["A1"].value = df        # the DataFrame lands in the sheet
df2 = wb.sheets.active["A1"].options(pd.DataFrame, expand="table").value

The bridge talks over a unix socket on this machine only — no TCP is opened. It needs officework running.

Your old vocabulary still works

Code written for openpyxl, xlwings or python-docx largely runs as-is:

ws = wb.active                          # openpyxl: cell(), append, iter_rows,
ws.cell(2, 3).value                     #   dimensions, create_sheet,
ws.append(["Aug", "pens", 5000])        #   copy_worksheet, freeze_panes …
xw.Range("B2").offset(1, 2).address     # xlwings: '$D$3' — resize,
xw.Range("A1").current_region           #   last_cell, current_region …
d.tables[0].cell(0, 1).text             # python-docx: row_cells, columns,
d[3].runs[0].font.name                  #   runs, clear …

The inventory — all 324 core members of the three libraries, judged one by one — is in the repo: docs/pysheet-gokan.ja.md. Interop is proven with the originals' own eyes: openpyxl reads what this engine writes, including the computed values it cannot produce itself. See the Python manual for the details and the deliberate differences.

Why the engines exist

openpyxl and python-docx rewrite the parts of the file they do not understand. For a document used as a printed form — the way most Japanese offices use one — that means the borders, merged cells, column widths, shapes, styles and headers you spent an afternoon on come back wrong.

These engines keep the original as the source of truth and write back only what changed. b.unsupported / d.unsupported list anything they could not read, so nothing is dropped in silence.

The docx side is checked against an independent reader (genoffice's TypeScript docx engine) over 51 real documents, 43 of which this project did not write: 46 survive an open-and-save untouched, and no document loses a single part of its zip. The rest — footnote marks, second and later section breaks, equations — are listed in d.unsupported rather than dropped quietly.

Measured on one machine, 1096 rows × 20 columns (21,920 cells):

License

AGPL-3.0-or-later.

Using it inside your company — building forms, running ledgers, writing scripts — carries no obligations at all. Obligations appear only if you ship something built on it to third parties, or offer a modified version as a network service.

日本語

帳票を壊さない xlsx / docx エンジンです。openpyxl や python-docx と違い、 罫線・結合・列幅・図形・様式・ヘッダーを保ったまま値を差し込めます。 読めなかった物は unsupported に出るので、黙って落ちることはありません。

$ pip install officework

from officework import sheet
b = sheet.Book.open("様式7.xlsx")
b["提案見積書"]["A30"] = "日本フネン株式会社"   # 書式は据え置き
b.save("out.xlsx")

from officework import doc
d = doc.Doc.open("報告書.docx")
print(d.unsupported)                   # 読めなかった物(黙って落とさない)
d.replace("旧社名", "新社名")           # 段落の中の書式はそのまま
d.save("out.docx")

詳しい説明は GitHub にあります。

• README.ja.md — 全体
• Python の手引き — 範囲⇄配列・=PY・openpyxl / xlwings / python-docx の語彙
• Excel からの乗り換え

ライセンスは AGPL-3.0-or-later。社内で使う分に義務はありません (帳票を作る・台帳を回す・スクリプトを書く・社内に配る、いずれも自由)。 義務が出るのは、これを組み込んだ物を社外へ配るときと、改造版をネットワーク 越しの役務として外部に提供するときだけです。