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babilonia

Handle accounting and finances in Brazil using Python.

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Install

python -m pip install babilonia

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Quick Gallery

API

Parse bank statement CSV

Convert raw bank exports to a canonical pandas.DataFrame.

Input (extrato_poupanca.csv from Banco do Brasil):

"Data","Histórico","Valor",
"01/08/2025","Juros","3,83 C",
"01/08/2025","Reajuste Monetário - BACEN","16,67 C",
"11/08/2025","Transferência de Crédito","1.000,00 C",

from babilonia.accounting import CashFlowBBPP

cf = CashFlowBBPP()
cf.load_data("./extrato_poupanca.csv")
cf.standardize()
print(cf.data)

        Data    Valor                   Categoria Descricao
  2025-08-01     3.83                       Juros
  2025-08-01    16.67  Reajuste Monetário - BACEN
  2025-08-11  1000.00    Transferência de Crédito

Supported account types: CashFlowBBCC, CashFlowBBCCPJ, CashFlowBBPP, CashFlowNUCredit.

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Cash flow analysis

Compute monthly and yearly summaries from a canonical cash flow file.

from babilonia.accounting import CashFlow

cf = CashFlow()
cf.load_data("./caixa_diario.csv")

dc = CashFlow.get_cashflow_report(df=cf.data, year=2025, initial_cash=5000.0)
print(dc["Summary"])
print(dc["Pannel"])

   Ano   Categoria     Total     Media  % Entradas
  2025    ENTRADAS  18200.00   1516.67      100.00
  2025      SAIDAS  -9430.00   -785.83       51.81
  2025     Moradia  -3200.00   -266.67       17.58
  2025  Alimentacao  -1800.00   -150.00        9.89

   Mes  Entradas   Saidas    Fluxo      Saldo
2025-01   1500.0  -780.0    720.0     5720.0
2025-02   1500.0  -810.0    690.0     6410.0
     ...

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Parse NFSe XML

Load and inspect a Nota Fiscal de Serviços Eletrônica from nfse.gov.br.

from babilonia.accounting import NFSe

nf = NFSe()
nf.load_data("./nfse.xml")
print(nf.date)           # '2025-09-01'
print(nf.emitter)        # '27543216700666 -- PRESTADOR LTDA'
print(nf.taker)          # '07704429000666 (CNPJ) -- TOMADOR LTDA'
print(nf.service_value)  # 6666.0

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Batch-load NFSe files

Aggregate a folder of NFSe XML files into a single catalog.

from babilonia.accounting import NFSeColl

coll = NFSeColl()
coll.load_folder("./notas_fiscais/")
print(coll.catalog[["name", "Date", "ValorServico", "Prestador"]])

          name        Date  ValorServico                          Prestador
  NFSe_NF0080  2025-09-01        6666.0  27543216700666 -- PRESTADOR LTDA
  NFSe_NF0081  2025-10-01        5000.0  27543216700666 -- PRESTADOR LTDA

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Command-line tools

The babilonia.tools scripts form a processing pipeline: raw exports → standardized files → cash flow reports.

Standardize raw bank exports

Reads T0 raw CSV files and writes T1 canonical CSVs in the same folder tree.

python -m babilonia.tools.parse --folder ./data --type bb-cc --year 2025

Available --type values: bb-cc, bb-pp, bb-ccpj, bb-cdb, nubank-credito.

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Build cash flow reports

Aggregates T1 files into daily, monthly, and annual summaries. Omit --year to process all years.

python -m babilonia.tools.cashflow --folder ./data --type bb-cc

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Categorize and report by label

Fills the Categoria column using a keyword dictionary, then prints and exports a monthly breakdown by category.

python -m babilonia.tools.categorize --folder ./data --type nubank-credito --year 2025

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Yearly cash flow report

Reads the consolidated daily file and prints a formatted yearly panel and category summary.

python -m babilonia.tools.report --folder ./data --type bb-cc --year 2025