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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 is_string(value, coerce_value = False, minimum_length = None, maximum_length = None, whitespace_padding = False, **kwargs):
 """Indicate whether ``value`` is a string. :param value: The value to evaluate. :param coerce_value: If ``True``, will check whether ``value`` can be coerced to a string if it is not already. Defaults to ``False``. :type coerce_value: :class:`bool <python:bool>` :param minimum_length: If supplied, indicates the minimum number of characters needed to be valid. :type minimum_length: :class:`int <python:int>` :param maximum_length: If supplied, indicates the minimum number of characters needed to be valid. :type maximum_length: :class:`int <python:int>` :param whitespace_padding: If ``True`` and the value is below the ``minimum_length``, pad the value with spaces. Defaults to ``False``. :type whitespace_padding: :class:`bool <python:bool>` :returns: ``True`` if ``value`` is valid, ``False`` if it is not. :rtype: :class:`bool <python:bool>` :raises SyntaxError: if ``kwargs`` contains duplicate keyword parameters or duplicates keyword parameters passed to the underlying validator """

    if value is None:
        return False

    minimum_length = validators.integer(minimum_length, allow_empty = True, **kwargs)
    maximum_length = validators.integer(maximum_length, allow_empty = True, **kwargs)

    if isinstance(value, basestring) and not value:
        if minimum_length and minimum_length > 0 and not whitespace_padding:
            return False

        return True

    try:
        value = validators.string(value,
                                  coerce_value = coerce_value,
                                  minimum_length = minimum_length,
                                  maximum_length = maximum_length,
                                  whitespace_padding = whitespace_padding,
                                  **kwargs)
    except SyntaxError as error:
        raise error
    except Exception:
        return False

    return True