Created
December 17, 2010 19:02
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Breaks the all_sessions_sorted.txt file into 10 minute chunks
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import csv, sys | |
from datetime import datetime, timedelta | |
reader = csv.reader(open("all_sessions_sorted.txt", 'rb'), delimiter="|") | |
timestamp = None | |
user = 0 | |
sessions = [] | |
current_session = None | |
for row in reader: | |
if reader.line_num == 1: continue # skip the header row | |
if row[2] == "": continue # skip rows without q6 (age) values | |
# if reader.line_num > 10000: break # for testing | |
event_code = int(row[3]) | |
timestamp = int(row[4]) | |
if int(row[0]) == user: | |
if event_code == 1 or event_code == 4: # start/active | |
if current_session == None: | |
current_session = {} | |
current_session['start'] = timestamp | |
current_session['user'] = user | |
current_session['q6'] = int(row[2]) | |
elif event_code == 2 or event_code == 5: # end/inactive | |
if current_session != None: | |
if current_session['start'] < timestamp: # might have missed the start event | |
current_session['end'] = timestamp | |
sessions.append(current_session) | |
current_session = None | |
else: | |
# new user | |
user = int(row[0]) | |
current_session = None | |
start = 1288756800 # Nov 3, 00:00 | |
# interval = [start+i*60*60 for i in range(7*24+1)] # every hour | |
interval = [start+i*60 for i in range(7*24*60+1)] # every ten minutes | |
print "q6|stimestamp|total" | |
for age in range(5,6): | |
for i in interval: | |
total = 0 | |
for session in sessions: | |
if session['q6'] == age and session['start']/1000.0 < i and i <= session['end']/1000.0: | |
total += 1 | |
print "%d|%d|%d" % (age, i, total) | |
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