If you would like to plot a contact map in Chord diagram style using ConKit without the overhead of using Python, you can simply use the conkit-plot script.
$> conkit-plot chord toxd/toxd.fasta fasta toxd/toxd.mat ccmpred
The call above uses the contact prediction file toxd.mat file, which is in ccmpred format, and plots the following contact map stored in the file toxd/toxd.png.
Each residue in the Chord plot corresponds to an amino acid in your sequence. For a full list of the encoding used, check the ContactMapChordFigure.
The color coding of the full sequence used is the following:
Q P R R K L C I L H R N P G R C T Y D K I P A F Y Y N Q K K K Q C E R F D W S G C G G N S N R F K T I E E C R R T C I G