Force all digits in a list to become integers.

def juggle_types(data):
    """Force all digits in a list to become integers."""
    # Data is a list of lists (2D) and not a single column table (1D)
    if isinstance(data[0], list):
        return [[force_int(col) for col in row] for row in data]

    # Data is 1D
    elif isinstance(data, list):
        return [force_int(i) for i in data]
    else:
        return data