Coursera课程笔记----P4E.Capstone----Week 6&7

Visualizing Email Data(Week 6&7)

code segment

gword.py

import sqlite3
import time
import zlib
import string

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

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 subject_id FROM Messages')
counts = dict()
for message_row in cur :
    text = subjects[message_row[0]]
    text = text.translate(str.maketrans('','',string.punctuation))
    text = text.translate(str.maketrans('','','1234567890'))
    text = text.strip()
    text = text.lower()
    words = text.split()
    for word in words:
        if len(word) < 4 : continue
        counts[word] = counts.get(word,0) + 1

x = sorted(counts, key=counts.get, reverse=True)
highest = None
lowest = None
for k in x[:100]:
    if highest is None or highest < counts[k] :
        highest = counts[k]
    if lowest is None or lowest > counts[k] :
        lowest = counts[k]
print('Range of counts:',highest,lowest)

# Spread the font sizes across 20-100 based on the count
bigsize = 80
smallsize = 20

fhand = open('gword.js','w')
fhand.write("gword = [")
first = True
for k in x[:100]:
    if not first : fhand.write( ",
")
    first = False
    size = counts[k]
    size = (size - lowest) / float(highest - lowest)
    size = int((size * bigsize) + smallsize)
    fhand.write("{text: '"+k+"', size: "+str(size)+"}")
fhand.write( "
];
")
fhand.close()

print("Output written to gword.js")
print("Open gword.htm in a browser to see the vizualization")

gline.py

import sqlite3
import time
import zlib

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, 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),"senders=",len(senders))

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

# pick the top schools
orgs = sorted(sendorgs, key=sendorgs.get, reverse=True)
orgs = orgs[:10]
print("Top 10 Organizations")
print(orgs)

counts = dict()
months = list()
# cur.execute('SELECT id, guid,sender_id,subject_id,sent_at FROM Messages')
for (message_id, message) in list(messages.items()):
    sender = message[1]
    pieces = senders[sender].split("@")
    if len(pieces) != 2 : continue
    dns = pieces[1]
    if dns not in orgs : continue
    month = message[3][:7]
    if month not in months : months.append(month)
    key = (month, dns)
    counts[key] = counts.get(key,0) + 1

months.sort()
# print counts
# print months

fhand = open('gline.js','w')
fhand.write("gline = [ ['Month'")
for org in orgs:
    fhand.write(",'"+org+"'")
fhand.write("]")

for month in months:
    fhand.write(",
['"+month+"'")
    for org in orgs:
        key = (month, org)
        val = counts.get(key,0)
        fhand.write(","+str(val))
    fhand.write("]");

fhand.write("
];
")
fhand.close()

print("Output written to gline.js")
print("Open gline.htm to visualize the data")