Implementation of the famous Python Turtle Chessboard task

turtle-chessboard.py

#!/usr/bin/python3

# Turtle Chessboard v.1.0
# by Dimitar D. Mitov
# https://github.com/ddmitov

# This is free and unencumbered software released into the public domain.

# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.

# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.

# For more information, please refer to <http://unlicense.org/>

# Homework for the 'Introduction to Python' course by
# Software Academy (https://softwareacademy.bg/)
# 2020-05-27 - 2020-06-17


from turtle import Turtle, Screen


def make_cell(painter, row, column, cell_side):
    if (row % 2) > 0 and (column % 2) == 0:
        painter.begin_fill()

    if (row % 2) == 0 and (column % 2) > 0:
        painter.begin_fill()

    side = 0
    while side < 4:
        side += 1
        painter.forward(cell_side)
        painter.right(90)

    if (row % 2) > 0 and (column % 2) == 0:
        painter.end_fill()

    if (row % 2) == 0 and (column % 2) > 0:
        painter.end_fill()

    return True


def go_to_next_cell(painter, cell_side):
    painter.forward(cell_side)

    return True


def make_row(painter, row, columns, cell_side):
    for column in range(columns):
        real_column = column + 1

        make_cell(painter, row, real_column, cell_side)
        go_to_next_cell(painter, cell_side)

    go_to_next_row(painter, columns, cell_side)

    return True


def go_to_next_row(painter, columns, cell_side):
    painter.right(180)
    painter.forward(columns * cell_side)
    painter.left(90)
    painter.forward(cell_side)
    painter.left(90)

    return True


def make_table(painter, rows, columns, cell_side):
    for row in range(rows):
        real_row = row + 1
        make_row(painter, real_row, columns, cell_side)

    return True


def main():
    screen = Screen()
    turtle = Turtle()

    turtle.penup()
    turtle.goto(-350, 300)
    turtle.pendown()

    make_table(turtle, 8, 8, 50)

    screen.exitonclick()

if __name__ == "__main__":
    main()