class Table:
    def __init__(self, name):
        self.name = name
        self.columns = []
        self.rows = []

    def __str__(self):
        return self.name

    def __repr__(self):
        return self.name

    def load_from_csv(self, csv_file):
        with open(csv_file, 'r') as f:
            reader = f.read().splitlines()

            # Primeira linha contêm o nome das colunas
            self.columns = reader[0].split(',')
            reader.pop(0)

            for row in reader:
                row = row.split(',')
                self.rows.append(row)

    def print_columns(self, column_list: list, where_filter: list = None, join_stmt: list = None):
        if column_list[0] == '*':
            column_list = self.columns

        print(', '.join(column_list))
        print('-' * 20)

        for row in self.rows:
            if where_filter is not None:
                column_index = self.columns.index(where_filter[0])
                row_value = row[column_index]

                if where_filter[1] == '=':
                    if row_value != where_filter[2]:
                        continue
                elif where_filter[1] == '>':
                    if row_value <= where_filter[2]:
                        continue
                elif where_filter[1] == '<':
                    if row_value >= where_filter[2]:
                        continue

            row_values = []
            for column in column_list:
                column_index = self.columns.index(column)
                row_values.append(row[column_index])

            print(', '.join(row_values))