FEN to SVG:

fen-to-svg.py

import chess, sys
import chess.svg

# Install python-chess to your Python3 virtualenv
# virtualenv -p python3 ~/path/to/myvenv
# source /path/to/myvenv/bin/activate
# Usage: python3 fen-to-svg.py 'myfenstring' outputfilename
# or /path/to/myvenv/bin/python3 fen-to-svg.py 'myfenstring' outputfilename
fen = sys.argv[1]
file_name = '{}.svg'.format(sys.argv[2])

board = chess.Board(fen)

boardsvg = chess.svg.board(board = board)
with open(file_name, "w") as f:
    f.write(boardsvg)