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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 _format_csv(content, delimiter):
 """Format delimited text to have same column width. Args: content (str):
 The content of a metric. delimiter (str):
 Value separator Returns: str: Formatted content. Example: "value_mse,deviation_mse,data_set\n" "0.421601,0.173461,train\n" "0.67528,0.289545,testing\n" "0.671502,0.297848,validation\n" ) "value_mse deviation_mse data_set\n" "0.421601 0.173461 train\n" "0.67528 0.289545 testing\n" "0.671502 0.297848 validation\n" """

    reader = csv_reader(StringIO(content), delimiter=builtin_str(delimiter))
    rows = [row for row in reader]
    max_widths = [max(map(len, column)) for column in zip(*rows)]

    lines = [
        " ".join(
            "{entry:{width}}".format(entry=entry, width=width + 2)
            for entry, width in zip(row, max_widths)
        )
        for row in rows
    ]

    return "\n".join(lines)