Because of its roots, calibre has aĬomprehensive command line interface for all its functions, documented in Command Line Interface. This makes adding new features and fixingīugs in calibre very easy, resulting in a frenetic pace of development. The modules interact with each other via well defined interfaces. Using the debugger in your favorite Python IDEĮxecuting arbitrary scripts in the calibre Python environmentĪPI documentation for various parts of calibreĬalibre has its roots in the Unix world, which means that its design is highly modular. Using the Python debugger as a remote debugger Having separate “normal” and “development” calibre installs on the same computer Note that calibre requires at least Python 3.8. You will learn how to get a calibre development environment set up on the operating system of your choice.Ĭalibre is written primarily in Python with some C/C++ code for speed and system interfacing. This means that you are free to download and modify the program to your heart’s content. Setting up a calibre development environment ¶Ĭalibre is completely open source, licensed under the GNU GPL v3.

Calibre 6.23.0 free