Keyboard walker

qwerty.py

#!/usr/bin/env python

layout = [
	['1234567890-=', 'qwertyuiop[]', 'asdfghjkl;\'\\', 'zxcvbnm,./'],
	['!@#$%^&*()_+', 'QWERTYUIOP{}', 'ASDFGHJKL:"|', 'ZXCVBNM<>?']
]

def get_char(xy, shift = 0):
	x, y = xy;
	return layout[shift][x][y]

def right(xy):
	x, y = xy
	y += 1
	if y > len(layout[0][x]) - 1:
		y = 0
	return (x, y)

def left(xy):
	x, y = xy
	y -= 1
	if y < 0:
		y = len(layout[0][x]) - 1
	return (x, y)

def down(xy):
	x, y = xy
	x += 1
	if x > len(layout[0]) - 1:
		x = 0
	if y > len(layout[0][x]) - 1:
		x, y = down((x, y))
	return (x, y)

def up(xy):
	x, y = xy
	x -= 1
	if x < 0:
		x = len(layout[0]) - 1
	if y > len(layout[0][x]) - 1:
		x, y = up((x, y))
	return (x, y)

def up_left(xy):
	return left(up(xy))

def up_right(xy):
	return right(up(xy))

def down_left(xy):
	return left(down(xy))

def down_right(xy):
	return right(down(xy))

def shift(xy):
	return xy

def loop(xy):
	return xy

def double_left(xy):
	return left(left(xy))

def double_right(xy):
	return right(right(xy))

def double_up(xy):
	return up(up(xy))

def double_down(xy):
	return down(down(xy))

def double_up_right(xy):
	return right(double_up(xy))

def double_up_left(xy):
	return left(double_up(xy))

def generate_graph(xy, actions):
	graph = []
	shift_reg = 0

	for action in actions:
		if action == shift:
			shift_reg = 1
		else:
			xy = action(xy)
			dx, dy = xy
			graph.append((dx, dy, shift_reg))
			if shift_reg == 1:
				shift_reg = 0
	return graph

def generate_string(graph):
	result = ''
	for element in graph:
		x, y, s = element
		result += get_char((x, y), s)
	return result

def generate_strings(template):
	result = []
	for x in range(len(layout[0])):
		for y in range(len(layout[0][x])):
			graph = generate_graph((x, y), template)
			result.append(generate_string(graph))
	return result

template = [loop, down, up_right, down, up_right, down, up_right, down]
strings = generate_strings(template)
print(strings)