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lcd.py

#!/usr/bin/env python3
 
# horizontal and vetical constants representing directives (class for figits seemed excessive)
BLANK, BAR__        = 'BLANK', 'BAR__'
LEFT_, RIGHT, BOTH_ = 'LEFT_', 'RIGHT', 'BOTH_'
 
# list of directives for digits 0-9 (horizionatal, vertical, horizontal, vertical, horizontal)
DIGITS = (
	(BAR__, BOTH_, BLANK, BOTH_, BAR__),
	(BLANK, RIGHT, BLANK, RIGHT, BLANK),
	(BAR__, RIGHT, BAR__, LEFT_, BAR__),
	(BAR__, RIGHT, BAR__, RIGHT, BAR__),
	(BLANK, BOTH_, BAR__, RIGHT, BLANK),
	(BAR__, LEFT_, BAR__, RIGHT, BAR__),
	(BAR__, LEFT_, BAR__, BOTH_, BAR__),
	(BAR__, RIGHT, BLANK, RIGHT, BLANK),
	(BAR__, BOTH_, BAR__, BOTH_, BAR__),
	(BAR__, BOTH_, BAR__, RIGHT, BAR__),
)
 
def get_digit(size, digit):
	'''Returns raw represntation of digit sized `s+2` * `2s+3`.'''
 
	# initialize variables
	assert 1 <= size <= 10, AssertionError("Size not between 1 and 10: {}".format(size))
	digit = DIGITS[digit]
	output = []
 
	# interpret directives
	for directive in digit:
		if directive in (BLANK, BAR__):
			line = ' ' + ('-' if directive == 'BAR__' else ' ')*size + ' '
			output.append(line)
		elif directive in (LEFT_, RIGHT, BOTH_):
			line = ('|' if directive != RIGHT else ' ') + ' '*size +  ('|' if directive != LEFT_ else ' ')
			output.extend([line] * (size))
 
	return output
 
 
def print_number(line):
	'''Concatenates digit representations and prints the (multi-)digit number.'''
	
	# validate input
	line = line.split()
	assert len(line) == 2, AssertionError("Line contains {} {} input".format(abs(len(line) - 2), 'extra' if len(line) > 2 else 'less'))
	assert all(x.isdigit() for x in line), AssertionError("Input is not numeric")
 
	# initialize variables
	size, numbers = line
	output = [''] * (2*int(size) + 3)
	if int(size) == 0:
		return
 
	# concatenate digit representations
	for number in numbers:
		output = [old + new for old, new in \
			zip(output, get_digit(int(size), int(number)))]
 
	# print the line
	print('\n'.join(output))
 
def main():
	'''Execute the main loop.'''
	with open('input.txt', 'r') as lines:
		for line in lines.readlines():
			if line == '00\n':
				break
			else:
				print_number(line)
		else:
			print("Warning: Input was not terminated by '00'")
 
if __name__ == '__main__':
	main()

output.stdout

    -  - 
  |  |  |
    -  - 
  ||    |
    -  - 
     --  -- 
|  ||   |   
|  ||   |   
 --  --  -- 
   |   ||  |
   |   ||  |
     --  -- 
 ---  ---  --- 
    ||   ||   |
    ||   ||   |
    ||   ||   |
      ---  --- 
    ||   |    |
    ||   |    |
    ||   |    |
      ---  --- 
 ---------- 
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
            
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
|          |
 ---------- 

raw_input.txt

0 1234567890
1 123
2 456
3 789
10 0
00
4 1234567890