Sudoku SVG converter

• Sudoku SVG converter
  • Weight of SVG's
  • Examples
    • Generate through shell
    • Generate through code
  • Customize
  • To-do

Small Python library for converting Sudoku string to .svg files (0 library dependencies, 1 .svg template required).

Weight of SVG's

Default template size: 2234 bytes.

Without all comments (including insert_numbers_here) and blank lines: 2054 bytes.

With default template one clue in puzzle weights about 35 bytes.

Easy puzzles have most clues already filled in. They contain about 45 clues at most. So, size of output.svg with easy unsolved puzzle in worst (practical) case is about 3629 bytes without comments.

Solved puzzles contain 81 clues, then size of solved puzzle is 4889 bytes without comments.

So, SVG's generated with this program won't cause slow loading of your website.

Examples

Here is how default template looks like:

Generate through shell

python3 sudoku_svg.py .7.9....6..8.5.......6.3.9.....26.5.5.2...........8..1.....7..9.1....52...7...38.

Generates output.svg (in the same directory), which looks like this (with default template):

Generate through code

from sudoku_svg import SudokuSVG

# 1. path to standard template
# 2. template for number tag
# 3. lambda for computing x and y values for tag
svg = SudokuSVG("template.svg",
                StringTemplate('\t\t<tspan x="$x" y="$y">$n</tspan>\n'), 
                lambda x, y: [50 + x * 100, 80 + y * 100])

puzzle = "6.7...8.42.........83....1........8..1..3......4567....2...1......7.84.5...64...."

# generates file output.svg with this puzzle
svg.generate("output.svg", puzzle)

Customize

If you don't like how standard template looks, you can either change it or create your own.

Here are some instructions:

1. Create/find .svg file for Sudoku grid.
2. Insert <!-- insert_numbers_here --> where you want numbers tag to go.
3. Write template for numbers tag. Example: '\t\t<tspan x="$x" y="$y">$n</tspan>\n' (where n - number to place, x and y is position of this number).
4. Write lambda for computing position of numbers tag. Example: lambda x, y: [50 + x * 100, 80 + y * 100] (x and y values from template will be replaced with first and second numbers in returned array respectively).

That's it. See template.svg, sudoku_svg.py, example_output.svg for more details.

To-do

• Improve .svg template.
• More command line arguments.
• Option for comments removing.
• Load template through strings.