TIL this exists

I also like the POSIX “seconds since 1970” standard, but I feel that should only be used in RAM when performing operations (time differences in timers etc.). It irks me when it’s used for serialising to text/JSON/XML/CSV.

I’ve seen bugs where programmers tried to represent date in epoch time in seconds or milliseconds in json. So something like “pay date” would be presented by a timestamp, and would get off-by-one errors because whatever time library the programmer was using would do time zone conversions on a timestamp then truncate the date portion.

If the programmer used ISO 8601 style formatting, I don’t think they would have included the timepart and the bug could have been avoided.

Use dates when you need dates and timestamps when you need timestamps!

Do you use it? When?

Parquet is really used for big data batch data processing. It’s columnar-based file format and is optimized for large, aggregation queries. It’s non-human readable so you need a library like apache arrow to read/write to it.

I would use parquet in the following circumstances (or combination of circumstances):

• The data is very large
• I’m integrating this into an analytical query engine (Presto, etc.)
• I’m transporting data that needs to land in an analytical data warehouse (Snowflake, BigQuery, etc.)
• Consumed by data scientists, machine learning engineers, or other data engineers

Since the data is columnar-based, doing queries like select sum(sales) from revenue is much cheaper and faster if the underlying data is in parquet than csv.

The big advantage of csv is that it’s more portable. csv as a data file format has been around forever, so it is used in a lot of places where parquet can’t be used.

Wow everyone seems to love P3 but I actually liked P4 better. I mean I really enjoyed both, but P4 was a more immersive experience for me. I should reboot my vita and play it again.

I really felt like P4 had deeper connections and relationships between the characters. It felt more real, and that made the tension in the game more exciting. I love every second of it and am still trying to find a game like it.

Don’t get me wrong, P3 was great also. The gameplay was superb and the characters were all great. But P4 still has a special place in my heart.

They’re asking for TV manufacturers to block a VPN app in the TV. Not to block VPN in general.

Dude, if you’re being obtuse on purpose because you have an ax to grind against Rust, try a different approach. You’re not getting anywhere, clearly by the fact that no one agrees with you.

If you don’t like that Rust has a restricted trademark, then call that out instead of trying to label the software and it’s license as non-free. It’s literally called out in my source that name restrictions ipso facto does not violate freedom 3.

But if you genuinely believe that the implementation of the Rust language and it’s trademark is burdensome to create a fork, and you want people to believe you, then you gotta bring receipts. Remember, the benchmark that we both quoted is that it “effectively hampers you from releasing your changes”. It being “not a piece of cake” doesn’t cut it.

Hint: Google Rust forks since their existence also undermines your claim.

Good luck.

Please read this and try again.

https://www.gnu.org/philosophy/free-sw.en.html#packaging

Rules about how to package a modified version are acceptable, if they don’t substantively limit your freedom to release modified versions, or your freedom to make and use modified versions privately. Thus, it is acceptable for the license to require that you change the name of the modified version, remove a logo, or identify your modifications as yours. As long as these requirements are not so burdensome that they effectively hamper you from releasing your changes, they are acceptable; you’re already making other changes to the program, so you won’t have trouble making a few more.

Python does not follow semver.

https://docs.python.org/3/faq/general.html#how-does-the-python-version-numbering-scheme-work

Yes it can be an issue because the GPS doesn’t know where you are and thinks you are on an aboveground street. Freeway tunnels can have multiple exits too.

I disagree. I think the default option should be what users expect, and users expect “copy” to do exactly that: copy without modifying the text.

While it would be ideal to have all datetime fields in databases and other data stores be time zone aware, that is certainly not the case. Also, SQLite (and probably others) do not have great support for time zones and it’s recommended to store datetimes as UTC (typically unix timestamps).

Deprecating utcnow was a good idea, but they should have replaced it with naive_utcnow. Oh well.

I’m shocked.

"I can read this Perl scrip"t should translate to “I’m lying”.

I’ve used pyenv for years and it’s an awesome tool. Keeps python binaries separate and it has a virtualenv plugin. I’ve gotten others to use it as well.

It works great for library owners who need to run tox/nox on multiple versions of python in test suites. Love it.

pyenv also has this with the .python-version file which will switch versions. And with the plugin, you can use virtualenvs in pyenv so that a .python-version can be simply: my-cool-project-virtualenv and switching to that directory automatically switches to it.

Yeah that’s a good point. It’s telling that inheritance is by design difficult to change unless you follow very specific rules of good OO design patterns.

I guess it’s easy to write bad code in any programming paradkgm but inheritance makes it easy to screw up.

Most of us have bad memories of over-complex hierarchies we regret seeing, but this is probably due to the dominance of OOP in recent decades.

This sentence here is why inheritance gets a bad reputation, rightly or wrongly. Inheritance sounds intuitive when you’re inheriting Vehicle in your Bicycle class, but it falls apart when dealing with more abstract ideas. Thus, it’s not immediately clear when and why you should use inheritance, and it soon becomes a tangled mess.

Thus, OO programs can easily fall into a trap of organizing code into false hierarchies. And those hierarchies may not make sense from developer to developer who is reading the code.

I’m not a fan of OO programming, but I do think it can occasionally be a useful tool.

If the work I’m doing is on a feature branch on remote or locally, why does it matter to the rest of the team? My integration steps can be done on a server instead of locally. TBD forces teams to collaborate synchronously since changes are pushed straight to trunk. Rebase or squashes are irrelevant here.

Another poster put it great: TBD is trying to solve a culture problem. Feature branches and pull requests into main is much more flexible. The only time TBD make sense is for small teams - like 2 or maybe 3. And even at 2, I’d much rather create feature branches that merge into main.

Precisely. In practice, trunk based development just means your branch is local instead of on remote.

Really cool. This was sorely needed for a while, and I’m glad that someone is taking the mantle to provide this valuable service to the Python community. As Seth mentions in his previous post, supply chain attacks are becoming more concerning. Great that the PSF has hired someone specifically for these types of issues.