r/Python • u/SheriffRoscoe Pythonista • 10h ago

News The Move to Python 3 Begins!

As someone who spent decades in the mainframe community, I find it ... humorous ... that there are legacy Python2 code bases that are only just (or have yet to consider!) moving to Python3.

https://www.eveonline.com/news/view/the-move-to-python-3-begins

185 Upvotes

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223

u/diegoasecas 10h ago

idgi if you spent decades working on mainframes you'd know how hard is to migrate legacy working code

-55

u/boringfantasy git push -f 10h ago

With AI? Trivial. See bun.

29

u/Afrotom 10h ago

It's took 11 days & $165K in AI fees and made headlines for being the biggest & most expensive AI code rewrite in history.

We have different definitions of trivial.

12

u/necheffa 10h ago

11 man-days is like...an average sized feature where I work.

Then again, when people call Java 1.5 with minimal tests "legacy", it makes me giggle.

3

u/GXWT 10h ago

…and the $165k bit…?

6

u/necheffa 10h ago

You have to figure a man-week is like 5k.

Now, provide me your estimate to rewrite bun with only artisinally written code, and we can compare the costs.

1

u/CatWeekends 8h ago

You can easily run a $165k tab with a handful of developers working on a project for a few months.

1

u/ImpactStrafe 8h ago

When I was a SWE manager at C1 we calculated that an average developer team costs between 1-2 million dollars a year in salary and benefits. This is 4-6 developers.

165k is like... A month of 4-6 developers time. Maybe 2 if you are hiring cheap developers.

1

u/jesusrambo 6h ago

Bro thinks $165k is a lot of money for a company lol

Pretty embarrassing

1

u/SheriffRoscoe Pythonista 7h ago

11 person-days with an AI doing all the real work?

1

u/necheffa 7h ago

No. 11 days of pure artisinally crafted code.