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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 blank(columns=1, name=None):
 """ Creates the grammar for a blank field. These are for constant empty strings which should be ignored, as they are used just as fillers. :param columns: number of columns, which is the required number of whitespaces :param name: name for the field :return: grammar for the blank field """

    if name is None:
        name = 'Blank Field'

    field = pp.Regex('[ ]{' + str(columns) + '}')
    field.leaveWhitespace()
    field.suppress()

    field.setName(name)

    return field