TF2 code to png converter

gistfile1.txt

with open('data.txt','r') as f:
    lines = f.readlines()

splits = []
for i in range(len(lines)):
    # Clean up crufty data
    lines[i] = lines[i][:-1].replace('\t',' ')
    lines[i] = lines[i].replace('o', '0')
    lines[i] = lines[i].replace('X','x')
    lines[i] = lines[i].replace('0x',' ')
    lines[i] = lines[i].replace('<<',' ')
    lines[i] = lines[i].replace('"',' ')

    splits += [filter(lambda l: bool(l), lines[i].split(' '))]

for id in ['1','2','3','4','5','6','7+8']:
    
    # Select only the desired bananas
    data = filter(lambda s: s[0] in id, splits)
    
    # Figure out how big the image is
    maxByte = max(map(lambda d: int(d[1]) + len(d) - 2, data))
    
    # Create a dictionary per character for voting purposes
    image = [{} for byte in range(maxByte)]
    for d in data:
        offset = int(d[1])
        length = len(d) - 2
        d_ = d[2:]
        for index in range(offset, offset+length):
            try:
                value = chr(int(d_[0], 16))
                image[index][value] = image[index].get(value, 0) + 1
            except:
                pass
    
            d_ = d_[1:]
    
    missing = 0
    ambiguous = 0
    with open('%s.png' % id, 'wb') as f:
        for byte in image:
            if byte:
                # Pick whichever option has the most 'votes'
                best = max(byte.keys(), key=lambda k: byte[k])
                
                # If there was a tie, make a note.
                if sum(byte[k] == byte[best] for k in byte.keys()) > 1:
                    ambiguous += 1
                
                # Write to the image file
                f.write(max(byte.keys(), key=lambda k: byte[k]))
            else:
                # Write a dummy byte
                f.write(chr(128))
                missing += 1
    
    print 'Image %s:\t%i missing, %i ambiguous' % (id, missing, ambiguous)