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A pre-flight validator for QuickBooks Online bank CSV uploads

A pre-flight validator for QuickBooks Online bank CSV uploads

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4 min read
Parsing RBC and TD chequing statements in Python: year-less dates, header-mapped columns and a balance proof

Parsing RBC and TD chequing statements in Python: year-less dates, header-mapped columns and a balance proof

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5 min read
How to delete EVERY copy of a duplicate line (not just the extras)

How to delete EVERY copy of a duplicate line (not just the extras)

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2 min read
A week of selling small data-cleanup jobs from zero: what failed, and the data-quality lessons we kept

A week of selling small data-cleanup jobs from zero: what failed, and the data-quality lessons we kept

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4 min read
Your JSON is valid. Your customer ID is gone.

Your JSON is valid. Your customer ID is gone.

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2 min read
Turning a messy payments export into a 2026 1099 vendor worksheet (without silently wrong totals)

Turning a messy payments export into a 2026 1099 vendor worksheet (without silently wrong totals)

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4 min read
A TypeScript CSV Importer That Refuses to Guess Your Fuel History

A TypeScript CSV Importer That Refuses to Guess Your Fuel History

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6 min read
CSV 한글 깨짐과 앞자리 0을 함께 확인하는 엑셀 가져오기

CSV 한글 깨짐과 앞자리 0을 함께 확인하는 엑셀 가져오기

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1 min read
Safe CSV export in Python: preventing formula injection before a lead list reaches Excel

Safe CSV export in Python: preventing formula injection before a lead list reaches Excel

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Comments 2
9 min read
CSV 열이 밀렸을 때: 쉼표를 세기 전에 따옴표와 줄바꿈 확인하기

CSV 열이 밀렸을 때: 쉼표를 세기 전에 따옴표와 줄바꿈 확인하기

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1 min read
How to clean skip trace phone numbers to E.164 before a CRM or dialer import (Python and Excel)

How to clean skip trace phone numbers to E.164 before a CRM or dialer import (Python and Excel)

Comments 1
8 min read
Cleaning a messy contacts CSV in 5 steps (with a short pandas script)

Cleaning a messy contacts CSV in 5 steps (with a short pandas script)

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3 min read
Convert CSV to SQL INSERT Statements Quickly (Without Breaking Your Data)

Convert CSV to SQL INSERT Statements Quickly (Without Breaking Your Data)

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4 min read
The Uniface CSV import that never found its header line

The Uniface CSV import that never found its header line

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4 min read
There is no standard for bank CSV exports. Here's what that looks like in practice

There is no standard for bank CSV exports. Here's what that looks like in practice

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3 min read
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