Okay, let me walk you through my run-in with what I ended up calling the “shamble format”. It wasn’t an official thing, just a name that stuck in my head for how messy some data was handled on an old project.

So, I jumped onto this team, right? They had this system, been running for ages, and needed some updates. The first task involved pulling data from this older module. Easy enough, I thought. Then I actually looked at the data files.
Man, it was a mess. There was no consistency. Some days the output looked like one thing, other days it was completely different. It felt like whoever built it just kept patching and changing things on the fly without documenting anything or thinking about structure.
Trying to Make Sense of It
My first step was just trying to load a few files. That failed spectacularly. Errors everywhere. So, I opened them up manually. What I found was just… well, shambolic.
- Some fields were comma-separated.
- Some used tabs.
- Others had fixed widths, but the widths changed randomly.
- Headers were sometimes there, sometimes not.
- Date formats? All over the place. Sometimes MM-DD-YYYY, sometimes YYYY/MM/DD, sometimes just random strings.
It was clear there wasn’t one format. It was dozens of slightly different, broken formats all lumped together. We started calling it the “shamble format” during our coffee breaks because trying to describe it properly took too long.
The Cleanup Attempt
I spent the next few days basically writing detective code. I had to make scripts that would:

- Try to guess the delimiter (comma, tab, pipe? Who knew!).
- Look for anything resembling a header row.
- Attempt to parse dates using a bunch of common patterns.
- Handle missing or garbage data without crashing.
- Log everything that looked weird, which was… a lot.
It felt less like programming and more like digital archaeology. Digging through layers of old, inconsistent data, trying to piece together what it was supposed to mean. It was incredibly frustrating. We wasted so much time just trying to read the data, let alone actually use it for the new features.
What Came Out of It
Eventually, I got something working. It wasn’t pretty. The script was huge and full of conditional checks for all the weird variations we found. But it could, most of the time, read the files and pull out something usable.
The big takeaway for me? Structure matters. A lot. Spending a little time upfront defining how data should look saves massive headaches down the road. That whole experience with the “shamble format” really hammered that home. It’s like building a house – you need a solid foundation and plan, otherwise, you just end up with a shaky shack that’s a nightmare to live in or fix. We eventually pushed hard to get that old module replaced entirely, just to escape that format.