rterzi
Joined 9 years ago
Karma
195
Submissions
10
Member since
May 2
Recent submissions
Comment · 7 years ago
No need to symlink manually, the `alternatives` mechanism will handle that for you.
Comment · 7 years ago
"Ship with" is a bit too ambiguous for my taste. F28/F29 "ship with" Python 2 in the sense that the packages are there, just not installed with a default install. If you `dnf install python2` (or something that depends on Python 2.7) it will get installed. They've also gone through the effort and moved the system stuff line dnf to Python 3.
Comment · 7 years ago
First, This is about RHEL 8 (Beta) not 7, 6, etc. Second `#!/usr/bin/python` is a different animal than `#!/usr/bin/env python`. One is hard coded. The other is `PATH` based so will change depending on current `PATH`.
On RHEL 7 (and earlier) `/usr/bin/python` must be the Python 2 the system shipped with or your break `yum` and other admin tools. When people try to install their own python by doing a `make install` as root, `yum` breaks and it's hard to recover the system.
What the article is saying is that RHEL 8 addresses this by having a platform python that the system tools use. So RHEL 8 tools will not use /usr/bin/python
Comment · 7 years ago
Fedora at least as of F28, moved to have system tools like dnf use Python 3.
For RHEL 8, the tools included with the system will use a different binary, platform-python that isn't in /usr/bin.
I can't remember if that's also the case for F28/F29.
Comment · 7 years ago
#!/usr/bin/env python is almost guaranteed to give you a surprise at some point. If someone has a virtualenv or conda env active in that shell it will be a different python environment (with different installed modules) than in other shells.
Comment · 8 years ago
APL has a long an interesting history. It was successfully used for decades in Wall Street firms.
It's also worth looking at
* The A+ programming language, an APL derivative created at Morgan Stanley by Arthur Whitney. https://en.wikipedia.org/wiki/A%2B_(programming_language).
Roger Hui also worked there for a number of year.s
* The J language from Roger Hui - https://en.wikipedia.org/wiki/Roger_Hui#J_language
* Arthur Whitney and Kx Systems - https://en.wikipedia.org/wiki/Arthur_Whitney_(computer_scien...