Comments on my first script?

[Phillip B Oldham]

I'm keen on learning python, with a heavy lean on doing things the
"pythonic" way, so threw the following script together in a few hours
as a first-attempt in programming python.

I'd like the community's thoughts/comments on what I've done;
improvements I can make, "don'ts" I should be avoiding, etc. I'm not
so much bothered about the resulting data - for the moment it meets my
needs. But any comment is welcome!

#!/usr/bin/env python
## Open a file containing a list of domains (1 per line),
## request and parse it's whois record and push to a csv
## file.

import subprocess
import re

src = open('./domains.txt')

dest = open('./whois.csv', 'w');

sep = "|"
headers = ["Domain","Registrant","Registrant's
Address","Registrar","Registrant Type","Date Registered","Renewal
Date","Last Updated","Name Servers"]

dest.write(sep.join(headers)+"\n")

def trim( txt ):
	x = []
	for line in txt.split("\n"):
		if line.strip() == "":
			continue
		if line.strip().startswith('WHOIS'):
			continue
		if line.strip().startswith('>>>'):
			continue
		if line.strip().startswith('%'):
			continue
		if line.startswith("--"):
			return ''.join(x)
		x.append(" "+line)
	return "\n".join(x)

def clean( txt ):
	x = []
	isok = re.compile("^\s?([^:]+): ").match
	for line in txt.split("\n"):
		match = isok(line)
		if not match:
			continue
		x.append(line)
	return "\n".join(x);

def clean_co_uk( rec ):
	rec = rec.replace('Company number:', 'Company number -')
	rec = rec.replace("\n\n", "\n")
	rec = rec.replace("\n", "")
	rec = rec.replace(": ", ":\n")
	rec = re.sub("([^(][a-zA-Z']+\s?[a-zA-Z]*:\n)", "\n\g<0>", rec)
	rec = rec.replace(":\n", ": ")
	rec = re.sub("^[ ]+\n", "", rec)
	return rec

def clean_net( rec ):
	rec = rec.replace("\n\n", "\n")
	rec = rec.replace("\n", "")
	rec = rec.replace(": ", ":\n")
	rec = re.sub("([a-zA-Z']+\s?[a-zA-Z]*:\n)", "\n\g<0>", rec)
	rec = rec.replace(":\n", ": ")
	return rec

def clean_info( rec ):
	x = []
	for line in rec.split("\n"):
		x.append(re.sub("^([^:]+):", "\g<0> ", line))
	return "\n".join(x)

def record(domain, record):
	details = ['','','','','','','','','']
	for k, v in record.items():
		try:
			details[0] = domain.lower()
			result = {
				"registrant": lambda: 1,
				"registrant name": lambda: 1,
				"registrant type": lambda: 4,
				"registrant's address": lambda: 2,
				"registrant address1": lambda: 2,
				"registrar": lambda: 3,
				"sponsoring registrar": lambda: 3,
				"registered on": lambda: 5,
				"registered": lambda: 5,
				"domain registeration date": lambda: 5,
				"renewal date": lambda: 6,
				"last updated": lambda: 7,
				"domain last updated date": lambda: 7,
				"name servers": lambda: 8,
				"name server": lambda: 8,
				"nameservers": lambda: 8,
				"updated date": lambda: 7,
				"creation date": lambda: 5,
				"expiration date": lambda: 6,
				"domain expiration date": lambda: 6,
				"administrative contact": lambda: 2
			}[k.lower()]()
			if v != '':
				details[result] = v
		except:
			continue

	dest.write(sep.join(details)+"\n")

## Loop through domains
for domain in src:

	domain = domain.strip()

	if domain == '':
		continue

	rec = subprocess.Popen(["whois",domain],
stdout=subprocess.PIPE).communicate()[0]

	if rec.startswith("No whois server") == True:
		continue

	if rec.startswith("This TLD has no whois server") == True:
		continue

	rec = trim(rec)

	if domain.endswith(".net"):
		rec = clean_net(rec)

	if domain.endswith(".com"):
		rec = clean_net(rec)

	if domain.endswith(".tv"):
		rec = clean_net(rec)

	if domain.endswith(".co.uk"):
		rec = clean_co_uk(rec)

	if domain.endswith(".info"):
		rec = clean_info(rec)

	rec = clean(rec)

	details = {}

	try:
		for line in rec.split("\n"):
			bits = line.split(': ')
			a = bits.pop(0)
			b = bits.pop(0)
			details[a.strip()] = b.strip().replace("\t", ", ")
	except:
		continue

	record(domain, details)

## Cleanup
src.close()
dest.close()