DEV Community: Mintu Agarwal

Installation Guide for pdf2image for python

Mintu Agarwal — Wed, 13 Dec 2023 14:55:34 +0000

Recently for my Python project, I wanted to create images of the generated PDF from my script. I added an option to whether I want to create the images and used pdf2image.convert_from_path to create jpeg files for the same.

However, the installation of pdf2image isn't your usual pip3 install pdf2image. It would rather throw an error like this -

The headers or library files could not be found for jpeg,
  a required dependency when compiling Pillow from source.

So first install some dependencies into your system using and then execute you pip3 install command

sudo apt-get install libjpeg-dev zlib1g-dev
pip3 install pdf2image

Also

Installation Guide for wkhtmltopdf for pdfkit in Python

Mintu Agarwal — Tue, 12 Dec 2023 09:34:14 +0000

Hi all, recently I created a project which required transforming an HTML output into a pdf file using python3. I faced several nuances while running the pdfkit util - from_file in python which internally requires wkhtmltopdf

You might face an error like the one below when executing pdfkit utilities.

OSError: No wkhtmltopdf executable found: "b''"
If this file exists please check that this process can read it or you can pass path to it manually in method call, check README. Otherwise please install wkhtmltopdf - https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf

As stated above, we must install the package from the above source. Installing using apt-get install or pip3 install may not necessarily work for you.

For me it threw the following error

> sudo apt-get install wkhtmltopdf
> pdfkit.from_file('x.html', 'y.pdf')
OSError: wkhtmltopdf exited with non-zero code 1. error:
qt.qpa.screen: QXcbConnection: Could not connect to display localhost:0.0
Could not connect to any X display.

So the preferred way to get this is:

sudo wget -p ./ https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.bionic_amd64.deb
sudo dpkg -i  wkhtmltox-0.12.1_linux-wheezy-amd64.deb

If after executing the second command you see the following error:

dpkg: dependency problems prevent configuration of wkhtmltox:
 wkhtmltox depends on libpng12-0; however:
  Package libpng12-0 is not installed.

Install the libpng12-0 not using apt-get install but again the package itself

sudo wget http://se.archive.ubuntu.com/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
sudo dpkg -i libpng12-0_1.2.54-1ubuntu1_amd64.deb
sudo dpkg -i  wkhtmltox-0.12.1_linux-wheezy-amd64.deb

Now your problem must get resolved. Upvote if this worked for you!
Also, the link to my project where I used pdfkit, which creates HTML and pdf of your Resume with the user providing the contents in a yaml.

Github Authentication

Mintu Agarwal — Tue, 12 Dec 2023 07:54:44 +0000

From 2021-08-13, GitHub is no longer accepting account passwords when authenticating Git operations. You need to add a PAT (Personal Access Token) instead, and you can follow the below method to add a PAT on your system.

Create Personal Access Token on GitHub
From your GitHub account, go to Settings → Developer Settings → Personal Access Token → Generate New Token (Give your password) → Fillup the form → click Generate token → Copy the generated Token, it will be something like ghp_sFhFsSHhTzMDreGRLjmks4Tzuzgthdvfsrta

Now follow the below method based on your machine:

For Windows OS ⤴
Go to Credential Manager from Control Panel → Windows Credentials → find git:https://github.com → Edit → On Password replace with with your GitHub Personal Access Token → You are Done

If you don’t find git:https://github.com → Click on Add a generic credential → Internet address will be git:https://github.com and you need to type in your username and password will be your GitHub Personal Access Token → Click Ok and you are done

For macOS ⤴
Click on the Spotlight icon (magnifying glass) on the right side of the menu bar. Type Keychain access then press the Enter key to launch the app → In Keychain Access, search for github.com → Find the internet password entry for github.com → Edit or delete the entry accordingly → You are done

For a Linux-based OS ⤴
For Linux, you need to configure the local GIT client with a username and email address,

$ git config --global user.name "your_github_username"
$ git config --global user.email "your_github_email"
$ git config -l

Once GIT is configured, we can begin using it to access GitHub. Example:

$ git clone https://github.com/YOUR-USERNAME/YOUR-REPOSITORY
> Cloning into `YOUR-REPOSITORY`...
Username: <type your username>
Password: <type your password or personal access token (GitHub)

Now cache the given record in your computer to remembers the token:

$ git config --global credential.helper cache

If needed, anytime you can delete the cache record by:

$ git config --global --unset credential.helper
$ git config --system --unset credential.helper