c

class DustTsiDataSourceFixed:

    def __init__(self, settings):
        self.error_percentage = int(settings['Meta-Data']['err_percentage'])

        self.heads = settings['Dust-Tsi-Data']['heads']

        settings = settings['Meta-Data']

        self.fixed_list = ['send_fixed_dust_10', 'send_fixed_dust_25', 'send_fixed_dust_tsp', 'send_fixed_dust_4', 'send_fixed_dust_1']
        self.fixed_hex_list = ['PM10', 'PM2.5', 'TSP', 'PM4', 'PM1']

        for f in self.fixed_list:
            exec ('self.' + f + '=int(settings[\'' + f + '\'])')
            f = 'value' + f[4:]
            exec ('self.' + f + '=int(settings[\'' + f + '\'])')

    def get_sample(self, response):
        for f in range(len(self.fixed_list)):
            if self.heads == 'all' or self.fixed_hex_list[f] == self.heads:
                ok = False
                exec('if self.'+self.fixed_list[f]+' and register_type == \''+self.fixed_hex_list[f]+'\': ok = True')
                if ok:
                    data = 'value' + self.fixed_list[f][4:]
                    exec('response[f+1] = float(self.'+data+')')
                    break

        if random.randint(0, 100) < self.error_percentage:
            for i in range(1, len(response)):
                response[i] = response * 100

        return response