human
Solve the following python programming problem given the following code:
def bootstrap_twilio_gateway(apps, twilio_rates_filename) : 
    currency_class = (apps.get_model ('accounting', 'Currency') if apps else Currency) 
    sms_gateway_fee_class = (apps.get_model ('smsbillables', 'SmsGatewayFee') if apps else SmsGatewayFee) 
    sms_gateway_fee_criteria_class = (apps.get_model ('smsbillables', 'SmsGatewayFeeCriteria') if apps else SmsGatewayFeeCriteria) 
    def get_twilio_data() : 
        twilio_file = open (twilio_rates_filename) 
        twilio_csv = csv.reader (twilio_file.read ().splitlines ()) 
        twilio_data = { 
            
} 
        skip = 0 
        for row in twilio_csv : 
            if (skip < 4) : 
                skip += 1 
                continue 
else : 
                try : 
                    iso = row [0].lower () 
                    provider = row [2].split ('-') [1].lower ().replace (' ', '') 
                    rate = float (row [3]) 
                    if (not (iso in twilio_data)) : 
                        twilio_data [iso] = { 
                            
} 
twilio_data [iso] [provider] = rate 
except IndexError : 
                    log_smsbillables_info (('Twilio index error %s:' % row)) 
twilio_file.close () 
        return twilio_data 
def get_mach_data() : 
        mach_workbook = xlrd.open_workbook ('corehq/apps/smsbillables/management/commands/pricing_data/Syniverse_coverage_list_DIAMONDplus.xls') 
        mach_table = mach_workbook.sheet_by_index (0) 
        mach_data = { 
            
} 
        try : 
            row = 7 
            while True : 
                country_code = int (mach_table.cell_value (row, 0)) 
                iso = mach_table.cell_value (row, 1) 
                network = mach_table.cell_value (row, 5).lower ().replace (' ', '') 
                subscribers = 0 
                try : 
                    subscribers = int (mach_table.cell_value (row, 10).replace ('.', '')) 
except ValueError : 
                    log_smsbillables_info (('Incomplete subscriber data for country code %d' % country_code))...

    
    

    Fix the buggy line: for twilio_provider in apps [iso] :
assistant
#Here is Python code to fix the buggy line: for twilio_provider in apps [iso] :
.

for twilio_provider in twilio_data [iso] :