Fix str_to_sprite
on Python 3.
I'm using a list comprehension as it is easier to grok than `list(map(list, lines))`.
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@ -133,7 +133,7 @@ def str_to_sprite(content):
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lines = filter(is_empty_line, lines)
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lines = filter(is_empty_line, lines)
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# Break up lines into each character
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# Break up lines into each character
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split_lines = map(list, lines)
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split_lines = [list(line) for line in lines]
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# Replace each character with its numeric equivalent
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# Replace each character with its numeric equivalent
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for line in split_lines:
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for line in split_lines:
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