解决以下代码的错误： def main(): with open('ips.csv', 'r') as file: ips = csv.DictReader(file) for ip in ips: get_domain(ip['ip'])

import csv

def main():
with open('ips.csv', 'r') as file:
ips = csv.DictReader(file)
for ip in ips:
get_domain(ip['ip'])

def get_domain(ip):
# Your code here
pass

if __name__ == '__main__':
main()

Note: The `get_domain` function is not defined in the code you provided. Please add the necessary code within the function to avoid any errors.