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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def getblock(lines):
 """Extract the block of code at the top of the given list of lines."""

    try:
        tokenize.tokenize(ListReader(lines).readline, BlockFinder().tokeneater)
    except EndOfBlock, eob:
        return lines[:eob.args[0]]
    # Fooling the indent/dedent logic implies a one-line definition
    return lines[:1]