fix codeblocks

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Tyrel Souza 2023-10-04 00:32:32 -04:00
parent b7c4b5d39b
commit df3d2b764f
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GPG Key ID: F3614B02ACBE438E
18 changed files with 134 additions and 41 deletions

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@ -17,7 +17,7 @@ newPythonProgressBar [deadlink]
To use this progressbar, it is very easy.
.. code:: python
.. code-block:: python
# To Setup
from progress_bar import ProgressBar

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@ -21,12 +21,12 @@ This would be a little cleaner.
this example would allow for http, https, ssh, spdy and mailto, anything else would error out.
.. code:: python
.. code-block:: python
facebook_page = URLField(default_protocol="http", protocols=["https","ssh","spdy","mailto"])
The way I could improve this would be
.. code:: python
.. code-block:: python
facebook_page = URLField(protocols=["https","https","ssh","spdy","mailto"])

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@ -13,14 +13,14 @@ This key had a sub key as well, so figuring out this was tricky.
To start, you can list your gpg keys like so:
.. code:: console
.. code-block:: console
$ gpg --list-keys
This will list keys such as
.. code:: console
.. code-block:: console
pub 4096R/01A53981 2011-11-09 [expires: 2016-11-07]
uid Tyrel Anthony Souza (Five year key for email.)
@ -28,7 +28,7 @@ This will list keys such as
To make this not expire, (same steps to change expiration date to another time), you must first edit the key
.. code:: console
.. code-block:: console
$ gpg --edit-key 01A53981
@ -38,7 +38,7 @@ You will then see a gpg prompt ``gpg>``
Type "expire" in and you will be prompted for how long to change it to
.. code:: console
.. code-block:: console
Changing expiration time for the primary key.
Please specify how long the key should be valid.

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@ -14,7 +14,7 @@ I recently found a cool command in BASH that I hadn't previously known. ``C-o``
For example:
.. code:: console
.. code-block:: console
$ touch a
$ touch b

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@ -10,7 +10,7 @@ CFEngine3 Install on CentOS 5.7
| Today I was tasked with installing CFEngine3 on CentOS-5.7 (A little outdated). When installing CFEngine-3.3.1 I kept getting an error that I couldn't find libtokyocabinet.so.9. I had to set my prefix to /usr/ because the location that tokyocabinet was installing my libraries to was not being read by CFEngine's make script.
| To do this (I am using tokyocabinet 1.4.47)
.. code:: console
.. code-block:: console
wget http://fallabs.com/tokyocabinet/tokyocabinet-1.4.47.tar.gz
tar -xzvf tokyocabinet-1.4.47.tar.gz
@ -23,7 +23,7 @@ Then I was able to ./configure && make && make install cfengine3 without any pro
So my overall script looked something like this:
.. code:: console
.. code-block:: console
wget http://fallabs.com/tokyocabinet/tokyocabinet-1.4.47.tar.gz
tar -xzvf tokyocabinet-1.4.47.tar.gz
@ -32,7 +32,7 @@ So my overall script looked something like this:
make
sudo make install
.. code:: console
.. code-block:: console
wget http://cfengine.com/source-code/download?file=cfengine-3.3.1.tar.gz
tar -xzvf cfengine-3.3.1.tar.gz

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@ -35,7 +35,7 @@ If you notice I mentioned a current environment in my previous ``pip freeze`` ex
Let's show an example of the first time use of ``virtualenv``:
.. code:: console
.. code-block:: console
$ sudo pip install virtualenv # Only time you might need sudo, try without first.
$ virtualenv myenv # Create the virtual environment
@ -51,7 +51,7 @@ After you create a virtual environment, you just run``source bin/activate`` and
Once installed correctly, you can run the command ``mkvirtualenv envname`` to create a virtual environment. You can then run``workon envname`` from anywhere, and it will activate that environment. For example, you could be at``/var/www/vhosts/www.mysite.com/django/`` and run``workon envname`` and it would activate the environment from there. This isn't a required package (none of them are really…) as I went a couple years without using``virtualenvwrapper``, but it is very useful and now I use it every day. Some tips I use with my setup of``virtualenvwrapper`` is that I use the postactivate scripts to automatically try to change into the proper project directory of my environment. This also means I usually name my``virtualenv`` after my project name for easy memory. It makes no sense to have a project called "cash_register" but the``virtualenv`` be called "fez". This is how I change to the right project after activating my ``virtualenv``. This goes in ``$WORKON_HOME/postactivate``
.. code:: bash
.. code-block:: bash
#!/bin/bash
# This hook is run after every virtualenv is activated.

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@ -15,7 +15,7 @@ The solution, after a day and a half of research is to override the **formfield_
Our solution is to prefetch for any M2M that are related to the current Model.
.. code:: python
.. code-block:: python
def formfield_for_manytomany(self, db_field, request, **kwargs):
if db_field.__class__.__name__ == "ManyToManyField" and \

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@ -11,7 +11,7 @@ Recently I have been diving into using signals with Django, which of course are
I am working on a website for work which in the most basicexplanation, is a task management site. Recently I have added in the ability to subscribe to tasks and get emails, I did this by connecting to the post_save signal. I only email out when a task is changed, not created (of course, no one would be subscribed to it). This worked flawlessly and "emails" out to anyone who is subscribed. I say that in quotes, because I haven't actually hooked it up to a real SMTP server, and only use
.. code:: shell
.. code-block:: shell
python -m smtpd -n -c DebuggingServer localhost:1025
@ -23,7 +23,7 @@ I tried a lot of different things, and was debating some that would be a bit mes
You can do this by doing something like this:
.. code:: python
.. code-block:: python
from app.models import ModelName

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@ -9,7 +9,7 @@ SSH Agent on "boot"
I had a friend complain that he had to keep adding his ssh key to his ssh-agent every time he rebooted. I have a really easy bit of shell code you can put into your .bashrc or your .zshrc file:
.. code:: bash
.. code-block:: bash
SSHKEYFILE=/path/to/your/ssh/key/file
ssh-add -l | grep -q $SSHKEYFILE

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@ -56,7 +56,7 @@ I added some markers to figure out what I needed to imitate in ESPHome, and saw
This looks like this in yaml:
.. code:: yaml
.. code-block:: yaml
switch:
- platform: gpio
@ -78,7 +78,7 @@ I'm pretty sure I jumped and screamed with excitement when it opened!
Once the door was opening and closing, I was able to add more yaml to set another binary sensor to show whether it was open or closed (from the reed sensor):
.. code:: yaml
.. code-block:: yaml
binary_sensor:
- platform: gpio
@ -90,7 +90,7 @@ Once the door was opening and closing, I was able to add more yaml to set anothe
All together this is shown on my Home Assistant Lovelace dashboard using two cards, one that shows a closed door, and one with an open door (both actual pictures of the door!) with a button to open it. Once it opens or closes the other card switches into place, Home Assistant at least at the time didn't have good conditional cards like I wanted.
.. code:: yaml
.. code-block:: yaml
type: conditional
conditions:

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@ -18,14 +18,14 @@ The tool I've chosen for reading EPUBs is the Python library `ebooklib <https://
My first task was to find an EPUB file, so I downloaded one from my calibre server. I convert all my ebook files to ``.epub`` and ``.mobi`` on my calibre server so I can access them anywhere I can read my OPDS feed. I chose Throne of Glass (abbreviating to ``TOG.epub`` for rest of post). Loading I launched Python, and ran
.. code:: console
.. code-block:: console
>>> from ebooklib import epub
>>> print(book := epub.read_epub("TOG.epub")
This returned me a ``<ebooklib.epub.EpubBook object...>`` , seeing I had an EpubBook I ran a ``dir(book)`` and found the properties available to me
.. code:: python
.. code-block:: python
['add_author', 'add_item', 'add_metadata', 'add_prefix',
'bindings', 'direction', 'get_item_with_href', 'get_item_with_id',
@ -42,7 +42,7 @@ I will note, at this time I was thinking that this wasn't the direction I wanted
Seeing I was on at least some track, I opened up PyCharm and made a new Project. First I setup a class called Epub, made a couple of functions for setting things up and ended up with
.. code:: python
.. code-block:: python
class Epub:
def __init__(self, book_path: str) -> None:
@ -52,7 +52,7 @@ Seeing I was on at least some track, I opened up PyCharm and made a new Project.
I then setup a ``parse_chapters`` file, where I loop through the TOC. Here I went to the definition of ``Link`` and saw I was able to get a ``href`` and a ``title``, I decided my object for chapters would be a dictionary (I'll move to a DataClass later) with ``title`` and ``content``. I remembered from earlier I had a ``get_item_by_href`` so I stored the itext from the TOC's href: ``self.contents.get_item_with_href(link.href).get_content()``. This would later prove to be a bad decision when I opened "The Fold.epub" and realized that a TOC could have a tuple of ``Section`` and ``Link``, not just ``Links``. I ended up storing the item itself, and doing a double loop in the ``parse_chapters`` function to loop if it's a tuple.
.. code:: python
.. code-block:: python
def parse_chapters(self) -> None:
idx = 0
@ -67,7 +67,7 @@ I then setup a ``parse_chapters`` file, where I loop through the TOC. Here I wen
``_parse_link`` simply makes that dictionary of ``title`` and ``item`` I mentioned earlier, with a new ``index`` as I introduced buttons in the DearPyGUI at this time as well.
.. code:: python
.. code-block:: python
def _parse_link(self, idx, link) -> None:
title = link.title
@ -81,7 +81,7 @@ That's really all there is to make an MVP of an EPUB parser. You can use ``Beaut
In my implementation my Epub class keeps track of the currently selected chapter, so this loads from all chapters and sets the ``current_text`` variable.
.. code:: python
.. code-block:: python
def load_view(self) -> None:
item = self.chapters[self.current_index]['item']

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@ -9,7 +9,7 @@ Scrollbar Colors
Was talking to someone about CSS Nostalgia and "back in my day" when scrollbar colors came up.
.. code:: css
.. code-block:: css
/* For Chromium based browsers */
::-webkit-scrollbar {

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@ -17,11 +17,11 @@ My first job out of college was a Python/Django company - and that directed my n
Django, if you are unaware, is a MVC framework that ships with a really great ORM.
You can do about 95% of your database queries automatically by using the ORM.
.. code:: python
.. code-block:: python
entry, created = Entry.objects.get_or_create(headline="blah blah blah")
.. code:: python
.. code-block:: python
q = Entry.objects.filter(headline__startswith="What")
q = q.filter(pub_date__lte=datetime.date.today())
@ -49,7 +49,7 @@ Full design disclosure: I followed a couple of blog posts in order to develop th
In order to instantiate a model definition, it's pretty easy.
What I did is make a new package called ``models`` and inside made a file for my Album.
.. code:: go
.. code-block:: go
type Album struct {
ID string `json:"id" gorm:"primary_key"`
@ -67,7 +67,7 @@ Each of the controller functions were bound to a ``gin.Context`` pointer, rather
The ``FindAlbum`` controller was simple:
.. code:: go
.. code-block:: go
func FindAlbum(c *gin.Context) {
var album models.Album
@ -79,7 +79,7 @@ The ``FindAlbum`` controller was simple:
Which will take in a ``/:id`` path parameter, and the GORM part of this is the third line there.
.. code:: go
.. code-block:: go
models.DB.Where("id = ?", c.Param("id")).First(&album).Error
@ -90,7 +90,7 @@ Error handling is standard Go logic, ``if err != nil`` etc and then pass that in
This was really easy to set up, and if you want to get a slice back you just use ``DB.Find`` instead, and bind to a slice of those structs.
.. code:: go
.. code-block:: go
var albums []models.Album
models.DB.Find(&albums)
@ -109,7 +109,7 @@ I'll only bother describing the ``models`` package here, as thats the SQLX part
In the ``models/album.go`` file, there's your standard struct here, but this time its bound to ``db`` not ``json``, I didn't look too deep yet but I presume that also forces the columns to set the json name.
.. code:: go
.. code-block:: go
type Album struct {
ID int64 `db:"id"`
@ -120,7 +120,7 @@ In the ``models/album.go`` file, there's your standard struct here, but this tim
An interface to make a service, and a receiver are made for applying the ``CreateAlbum`` form (in another package) which sets the form name and json name in it.
.. code:: go
.. code-block:: go
func (a *Album) ApplyForm(form *forms.CreateAlbum) {
a.ID = *form.ID
@ -135,7 +135,7 @@ Nested inside the ``models/sql/album.go`` file and package, is all of the Receiv
I'll just comment the smallest one, as that gets my point across.
Here is where the main part of GORM/SQLX differ - raw SQL shows up.
.. code:: go
.. code-block:: go
func (s *AlbumService) GetAll() (*[]models2.Album, error) {
q := `SELECT * FROM albums;`

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@ -41,7 +41,7 @@ For software, I installed the python packages for Pimoroni and Blinkt, which cam
I then added a new service in systemd to control the mqtt server
.. code:: ini
.. code-block:: ini
[Unit]
Description=Meeting Indicator

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@ -14,7 +14,7 @@ Recently my coworker set something up that we need an environment variable set u
* After that you can use ``lpass show`` and capture that in a variable to export your API key as an environment variable.
.. code:: bash
.. code-block:: bash
lpass status
if [ $? -ne 0 ]; then

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@ -13,7 +13,7 @@ I was talking to a `friend <https://fredeb.dev>`_ [citation needed] about updati
I did this by showing the following output:
.. code:: shell
.. code-block:: shell
$ which ls
/usr/bin/ls
@ -34,7 +34,7 @@ It turns out that ZSH's ``which`` is equivalent to the ZSH shell built-in ``when
After running ``/usr/bin/zsh`` and sourcing my aliases (I don't have a zshrc file anymore, I need to set that back up), I was able to settle my fears and prove to myself that I wasn't making things up. There is a which which shows you which aliases you have set up, which is default for ZSH.
.. code:: shell
.. code-block:: shell
$ which ls
ls: aliased to exa -lhFgxUm --git --time-style long-iso --group-directories-first

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@ -0,0 +1,93 @@
Rotate a Matrix in Python
#########################
:author: tyrel
:category: Tech
:tags: python
:status: published
I've been doing Advent of Code for a few years now, and every year I do it in my favorite language, Python.
One thing that comes up a lot, is rotating matrices.
One way to do this, is to use Numpy, using ``np.rot90(mat)``, but not everyone wants to install Numpy just to do one small task.
I know I don't always.
The way I always do it, that will support non-square matrixes, is to use zip.
.. code-block:: python
>>> matrix = [
[1,2,3],
[4,5,6],
[7,8,9]
]
>>> rotated = list(zip(*matrix[::-1]))
# And result is
[[7, 4, 1],
[8, 5, 2],
[9, 6, 3]]
We can break this down bit by bit.
This will copy the list, with a -1 step, resulting in a reverse order
.. code-block:: python
>>> matrix[::-1]
[[7,8,9],
[4,5,6],
[1,2,3]]
Next we need to call zip in order to get the x-th item from each inner list, but first, we need to unpack it. If you'll notice, the unpacked version isn't wrapped with another list, which is what zip needs from us.
.. code-block:: python
# Too many lists
>>> print(matrix[::-1])
[[7, 8, 9], [4, 5, 6], [1, 2, 3]]
# Just right
>>> print(*matrix[::-1])
[7, 8, 9] [4, 5, 6] [1, 2, 3]
From there, we can pass this unpacked list of - in our case - three lists, to zip (and in Python 3 this returns a generator, so we need to call list again on it, or just use it)
.. code-block:: python
>>> # Again, we get the rotated matrix
>>> list(zip(*matrix[::-1]))
[[7, 4, 1],
[8, 5, 2],
[9, 6, 3]]
Notes
-----
Small note: If you run this, you will actually get a list of tuples, so you can map those back to a list, if you need to update them for any reason.
I just wanted square brackets in my examples.
.. code-block:: python
# This is just messy looking, so I didn't mention it until now
>>> list(map(list, zip(*matrix[::-1])))
As I mentioned, due to using ``zip`` this will work with non-square examples as well.
.. code-block:: python
>>> matrix = [
... [1,2,3,4,5,6,7,8,9],
... [9,8,7,6,5,4,3,2,1],
... ]
>>> print(list(zip(*matrix[::-1])))
[(9, 1),
(8, 2),
(7, 3),
(6, 4),
(5, 5),
(4, 6),
(3, 7),
(2, 8),
(1, 9)]

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@ -40,7 +40,7 @@ FEED_ATOM = 'tyrel-dev.atom.xml'
FEED_ALL_ATOM = 'tyrel-dev.all.xml'
PLUGINS = ["webassets"]
PLUGINS = ["webassets","syntax_highlighting"]
DEFAULT_PAGINATION = True
DISPLAY_CATEGORIES_ON_MENU = False