Ошибка в коде программы, для массовой проверки адресов btc

import sys
import re
from time import sleep
 
try:    # if is python3
    from urllib.request import urlopen
except: # if is python2
    from urllib2 import urlopen
 
 
def check_balance(address):
 
    #Modify the value of the variable below to False if you do not want Bell Sound when the Software finds balance.
    SONG_BELL = True
 
    #Add time different of 0 if you need more security on the checks
    WARN_WAIT_TIME = 0
 
    blockchain_tags_json = [ 
        'total_received',
        'final_balance',
        ]
 
    SATOSHIS_PER_BTC = 1e+8
 
    check_address = address
 
    parse_address_structure = re.match(r' *([a-zA-Z1-9]{1,34})', check_address)
    if ( parse_address_structure is not None ):
        check_address = parse_address_structure.group(1)
    else:
        print( "\nThis Bitcoin Address is invalid" + check_address )
        exit(1)
 
    #Read info from Blockchain about the Address
    reading_state=1
    while (reading_state):
        try:
            htmlfile = urlopen("https://blockchain.info/address/%s?format=json" % check_address, timeout = 10)
            htmltext = htmlfile.read().decode('utf-8')
            reading_state  = 0
        except:
            reading_state+=1
            print( "Checking... " + str(reading_state) )
            sleep(60*reading_state)
 
    print( "\nBitcoin Address = " + check_address )
 
    blockchain_info_array = []
    tag = ''
    try:
        for tag in blockchain_tags_json:
            blockchain_info_array.append (
                float( re.search( r'%s":(\d+),' % tag, htmltext ).group(1) ) )
    except:
        print( "Error '%s'." % tag );
        exit(1)
 
    for i, btc_tokens in enumerate(blockchain_info_array):
 
        sys.stdout.write ("%s \t= " % blockchain_tags_json[i])
        if btc_tokens > 0.0:
            print( "%.8f Bitcoin" % (btc_tokens/SATOSHIS_PER_BTC) );
        else:
            print( "0 Bitcoin" );
 
        if (SONG_BELL and blockchain_tags_json[i] == 'final_balance' and btc_tokens > 0.0): 
 
            #If you have a balance greater than 0 you will hear the bell
            sys.stdout.write ('\a\a\a')
            sys.stdout.flush()
 
            arq1.write("Bitcoin Address: %s" % check_address)
            arq1.write("\t Balance: %.8f Bitcoin" % (btc_tokens/SATOSHIS_PER_BTC))
            arq1.write("\n")
            arq1.close()
            if (WARN_WAIT_TIME > 0):
                sleep(WARN_WAIT_TIME)
 
#Add the filename of your list of Bitcoin Addresses for check all.
with open("list-addresses.txt") as file:
    for line in file:
 
      arq1 = open('addresses-with-balance-yay.txt', 'a')
      address = str.strip(line)
    print ("__________________________________________________\n")
 
check_balance(address)

with open("list-addresses.txt") as file:
    for line in file:
 
      arq1 = open('addresses-with-balance-yay.txt', 'a')
      address = str.strip(line)
      print ("__________________________________________________\n")
 
      check_balance(address)