def float_else_zero(sstring):
    """Return converted string to float. If conversion fail, return zero.

    :param sstring: String to be converted
    :return: ``float(sstrinq)`` if ``sstring`` can be converted to float
        (e.g. ``"3.14"``), else ``0``
    """
    try:
        return float(sstring)
    except ValueError:
        return 0