gbasic.py

import sqlite3
import time
import zlib

howmany = int(input("How many to dump? "))

conn = sqlite3.connect('index.sqlite')
cur = conn.cursor()

cur.execute('SELECT id, sender FROM Senders')
senders = dict()
for message_row in cur :
    senders[message_row[0]] = message_row[1]

cur.execute('SELECT id, subject FROM Subjects')
subjects = dict()
for message_row in cur :
    subjects[message_row[0]] = message_row[1]

# cur.execute('SELECT id, guid,sender_id,subject_id,headers,body FROM Messages')
cur.execute('SELECT id, guid,sender_id,subject_id,sent_at FROM Messages')
messages = dict()
for message_row in cur :
    messages[message_row[0]] = (message_row[1],message_row[2],message_row[3],message_row[4])

print("Loaded messages=",len(messages),"subjects=",len(subjects),"senders=",len(senders))

sendcounts = dict()
sendorgs = dict()
for (message_id, message) in list(messages.items()):
    sender = message[1]
    sendcounts[sender] = sendcounts.get(sender,0) + 1
    pieces = senders[sender].split("@")
    if len(pieces) != 2 : continue
    dns = pieces[1]
    sendorgs[dns] = sendorgs.get(dns,0) + 1

print('')
print('Top',howmany,'Email list participants')

x = sorted(sendcounts, key=sendcounts.get, reverse=True)
for k in x[:howmany]:
    print(senders[k], sendcounts[k])
    if sendcounts[k] < 10 : break

print('')
print('Top',howmany,'Email list organizations')

x = sorted(sendorgs, key=sendorgs.get, reverse=True)
for k in x[:howmany]:
    print(k, sendorgs[k])
    if sendorgs[k] < 10 : break