OnO365 | Python Fiddle

import dns.resolver
import json
# from hunter_helper import companies as comps
'''
Input
	domain

Returns 
	1: guaranteed O365 user
	2: possible O365 user
	3: non-O365 user
	4: no answer
'''
def domain_lookup(dom):
	try:
		answers = dns.resolver.query(dom, 'MX')
	except:
		return 4

flag = 3

for rdata in answers:
		if 'outlook.com' in str(rdata.exchange):
			return 1
		elif 'gmail' in str(rdata.exchange) or \
			 'hotmail' in str(rdata.exchange) or \
			 'msoutlookonline' in str(rdata.exchange):
			continue
		else:
			flag=2

return flag

def handleDomain(comp):
	if comp is None:
		return False
	res = domain_lookup(comp)

if res == 1:
		return True
	elif res == 2:
		return False	# can handle differently acc. to need
	elif res == 3:
		return False
	else:
		return False

# def OnO365(csv, domain_index, out):
	'''
	INPUT:
		csv: path of file to be used
		domain_index: 0-indexed position of domain in csv
		out: path of file to which to be written
	OUTPUT:
		(writes lines corresponding to comapnies guarateed to be on O365 to designated file) 
	
ls
ret = []

with open(csv, 'r') as infile:
	for line in infile:
		domain = line.split(',')[domain_index].replace('https://','').replace('http://','').split('/')[0]
		if handleDomain(domain):
			ret.append(line)

with open(out, 'w') as outfile:
	for line in ret:
		outfile.write(line + '\n')
        '''
print('hello')

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