Python-сообщество

_parsed = []
_min_dict = {}
def _parse_source_data():
    for cell in source_data:
        splitted = cell.split('\t')
        vendor = splitted[1].split()[0]
        price = float(splitted[3].replace(',','.').replace(' ',''))
        name = splitted[4]
        if name.startswith("Многофункциональное") or name.startswith('МФУ'):
            _parsed.append((vendor, price, name))
def get_printer_price(vendor):
    price_list = [(vendor_, price, name) for vendor_, price, name in _parsed if vendor == vendor_.lower()]
    for vendor, price, name in sorted(price_list ,key=lambda tp:tp[1]):
        print('{} | price {}'.format(name,price))
def get_min_price(vendor):
    if not _min_dict.get(vendor):
        try:
            _min_dict[vendor] = min([price for vendor_, price, name in _parsed if vendor_.lower() == vendor])
        except ValueError:
            print('net takogo')
    for vendor, price in sorted([(key, _min_dict[key]) for key in _min_dict]):
        print('min price of {} is {}'.format(vendor,price))
interact = {'1':get_printer_price,
            '2':get_min_price}
def main():
    _parse_source_data()
    while True:
        select = input('4to nado?\n1: get pricelist of selected vendor\n2: get min price of selected vendor\n>>')
        try:
            interact[select](input('vendor?').lower())
        except KeyError:
            print('1 ili 2')
if __name__ == '__main__':
    main()