print("Timofejs Jegorkins 181RDB331")


class AutoMasina:
    Vards = ""
    Uzvards = ""
    DzDatums = ""
    num = ""
    atzime = 0

    def get_age(self):
        return 2019 - int(self.DzDatums[6:])

    def print(self):
        print("Vards: {},\tUzvards: {},\tDzDatums: {},\tnum: {},\tatzime: {}".format(self.Vards, self.Uzvards, self.DzDatums, self.num, str(self.atzime)))


def get_int(string):
    print(string)
    line = input()
    try:
        value = int(line)
        return value
    except ValueError:
        print("Ievadiet tikai veselus skaitlus.")
        return get_int(string)


def open_file():
    print("Enter the datafile name: ")
    file_name = str(input())
    try:
        data_file = open(file_name, 'r')
        return data_file
    except IOError:
        print("Invalid file name or path, try again!")
        open_file()


def main():
    data_file = open_file()
    error_file = open("err.txt", 'w')

    hz = []

    line = data_file.readline()
    cnt = 1

    while line:
        data_values = line.split(';')

        if len(data_values) <= 0:
            line = data_file.readline()
            cnt += 1
            continue

        data_values[0] = " ".join(data_values[0].split())
        for i in range(1, len(data_values)):
            data_values[i].replace(" ", "")

        if len(data_values) < 6:
            error_file.write("Line {}: Contains too few arguments\n".format(cnt))
            line = data_file.readline()
            cnt += 1
            continue
        if len(data_values) > 6:
            error_file.write("Line {}: Contains too many arguments\n".format(cnt))
            line = data_file.readline()
            cnt += 1
            continue

        try:
            f = int(data_values[4])
            if f < 0:
                error_file.write("Line {}: Invalid mileage entered !\n".format(cnt))
                line = data_file.readline()
                cnt += 1
                continue
        except ValueError:
            error_file.write("Line {}: Invalid mileage entered !\n".format(cnt))
            line = data_file.readline()
            cnt += 1
            continue

        appl = AutoMasina()
        appl.Vards = data_values[0]
        appl.Uzvards = data_values[1]
        appl.DzDatums = data_values[2]
        appl.num = data_values[3]
        appl.atzime = int(data_values[4])

        hz.append(appl)

        line = data_file.readline()
        cnt += 1

    for appl in hz:
        appl.print()

    data_file.close()
    error_file.close()

    while True:
        option = get_int("1. Atrast studentu, apliecibas numuru kurs atbilst lietotajam; 2. Atrast pec uzvarda; 3. Sakartot atzimi pec augosas secibas; 4. Exit.")
        if option == 4:
            break
        if option == 1:
            print("Ievadiet apliecibas numuru: ")
            line = str(input())
            for appl in hz:
                if appl.num == line:
                    appl.print()
        if option == 2:
            print("Ievadiet uzvardu: ")
            line = str(input())
            for appl in hz:
                if appl.Uzvards == line:
                    appl.print()
        if option == 3:
            count = get_int("Atzime: ")
            for appl in hz:
                if appl.atzime == count:
                    appl.print()


if __name__ == "__main__":
    main()