[Chicago] is there really no built-in file/iter split() thing?

[skip at pobox.com]

My candidate:

    def chunker(f, splitter=";"):
        rest = ""
        for line in f:
            line = rest + line
            if splitter in line:
                first, rest = line.split(splitter, 1)
                yield first
            else:
                rest = line
        if rest:
            yield rest

    if __name__ == "__main__":
        import sys
        for chunk in chunker(open(sys.argv[1]), ';'):
            print repr(chunk)

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