A minimal yet valid double-entry accounting system in Python.

See project documentation at https://epogrebnyak.github.io/abacus/.

pip install abacus-py

For latest version install from github:

pip install git+https://github.com/epogrebnyak/abacus.git

abacus-py requires Python 3.10 or higher.

Let's do Sample Transaction #1 from accountingcoach.com¹.

On December 1, 2022 Joe starts his business Direct Delivery, Inc. The first transaction that Joe will record for his company is his personal investment of $20,000 in exchange for 5,000 shares of Direct Delivery's common stock. Direct Delivery's accounting system will show an increase in its account Cash from zero to $20,000, and an increase in its stockholders' equity account Common Stock by $20,000.

Both Python code and command line script below will produce balance sheet after Sample Transaction #1 is completed.

Python code:

from abacus import Chart, Report

chart = Chart(assets=["cash"], capital=["common_stock"])
ledger = chart.ledger()
ledger.post(debit="cash", credit="common_stock", amount=20000, title="Owner's investment")
report = Report(chart, ledger)
print(report.balance_sheet)

Command line script:

bx init
bx post --entry asset:cash capital:common_stock 20000 --title "Initial investment"
bx report --balance-sheet

Balance sheet
ASSETS  20000  CAPITAL              20000
  Cash  20000    Common stock       20000
                 Retained earnings      0
               LIABILITIES              0
TOTAL   20000  TOTAL                20000

See further transactions for this example at documentation website.