The answer for Daily Programmer #172

dp172.py

from string import uppercase

#Build fonts from txt file
with open('font.txt', 'rb') as fonts:
    letters = fonts.readlines()
    font = {}
    for line in letters:
        if line[0] in uppercase:
            line = line.translate(None, '\n')
            font[line] = []
            default = font[line]
        else:
            default.append(line.translate(None, '\n'))

def render_text(WORD, letters):
    rendered_text = []
    space = ' 0 '
    word_len = len(letters)
    letter_index, pixel_index = 0, 0
    line = ''
    while letter_index<=word_len:
        if letter_index == word_len:
            rendered_text.append(line)
            line = ''
            letter_index = 0
            pixel_index +=1
        try:
            line += letters[letter_index][pixel_index] + space
        except IndexError:
            break
        letter_index += 1
    for line in rendered_text:
        print line
    return write_file(WORD,rendered_text)

def write_file(WORD, rendered_text):
    filename = WORD + '.PBM'
    with open(filename, 'wb') as output:
        output.write('P1\n')
        output.write(str(len(rendered_text[0])/2)+' '+\
                            str(len(rendered_text))+'\n')
        for line in rendered_text:
            output.write(line+'\n')

if __name__=='__main__':
    while True:
        WORD = raw_input('Type your word here: ').upper()
        if WORD == '.exit':
            break
        letters = []
        for letter in WORD.upper():
            render = font[letter]
            letters.append(render)
        render_text(WORD, letters)