Calendizer is a simple Python command line tool that generates a set of calendar-month tables and pastes them onto a given set of 12 photos.

A quick way to make your own calendar for printing.

Self-printing has several advantages over online/order printing:

• you can iterate several test-prints to get things just right
• often images print slightly darker than on-screen, and self-printing allows you to adjust for that
• no waiting about for the post!
• depending on your printer and the volume, it can be cheaper

The size and position of the calendar-table is fully configurable for each month.

This allows for self-printing calendars in a timely manner.

To generate 12 images of a mini calendar:

python render_calendar_tables.py <year> <path to output directory>

To take 12 images and use them to create a calendar:

python calendize.py <year> <path to directory with 12 images in PNG or JPEG format> <path to output directory>

For a full list of options, just type the relevant command:

python render_calendar_tables.py

python calendize.py

By default, calendizer tries to auto-calculate the DPI and margins. It uses the table in CSV format to perform the calculation.

Via the --dpi option, you can override this calculation.

With an input image of size 4000 x 3000, these settings seem to work well:

--dpi 450 -b 100 -r 100

Settings for other image sizes:

There is an alpha (transparency) option:

-a 0.8

but printing on a small size like 2L or A5 looks better with the default opaque setting.

Example:

calendize.py <year> <path to directory with 12 images in PNG or JPEG format> <path to output directory> --dpi 450 -b 100 -r 100

• Python 3.x

1. Install Python 3.7.x and pip

• Python 3.7.9 or later
• pip 20.2.2 or later

2. Install dependencies

pip install -r pip.config

https://towardsdatascience.com/simple-little-tables-with-matplotlib-9780ef5d0bc4

License is MIT