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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 process_row(cls, data, column_map):
 """Process the row data from Rekall"""

        row = {}
        for key,value in data.iteritems():
            if not value:
                value = '-'                
            elif isinstance(value, list):
                value = value[1]
            elif isinstance(value, dict):
                if 'type_name' in value:
                    if 'UnixTimeStamp' in value['type_name']:
                        value = datetime.datetime.utcfromtimestamp(value['epoch'])
                        if value == datetime.datetime(1970, 1, 1, 0, 0):
                            value = '-'

            # Assume the value is somehow well formed when we get here
            row[column_map[key]] = value
        return row