thing.py

# This is proof-of-concept code, so it's rather messy and shit.
# It should however get the point across.

# If anyone has a better way to do this, let me know.


import time

# Time period per record in seconds
TIME_PERIOD = 1
SAVED_PERIODS = 5

_TIME = 0
_COUNT = 1

records = [None] * SAVED_PERIODS
for _x in xrange(SAVED_PERIODS):
	records[_x] = [0, 0]

index = 0


def on_message():
	global index
	# Determine current time slot
	t = int(time.time() / TIME_PERIOD)
	if records[index][_TIME] != t:
		# Create a new record and reset the data
		index = (index + 1) % SAVED_PERIODS
		records[index][_TIME] = t
		records[index][_COUNT] = 0
	# Update the record for this time slot
	records[index][_COUNT] += 1

def print_records():
	print "\r\n=== Records ==="
	# Just an example - obviously you'd ram the data into a graph or something
	from datetime import datetime
	# Loop through earliest to latest
	for x in xrange(index + 1, index + 1 + SAVED_PERIODS):
		x %= SAVED_PERIODS
		# Convert our time slot into a real time again
		dt = datetime.fromtimestamp(records[x][_TIME] * TIME_PERIOD)
		print "{:%Y-%m-%d %H:%M:%S} | {}".format(dt, records[x][_COUNT])


if __name__ == "__main__":
	for x in xrange(3):
		on_message()
	time.sleep(TIME_PERIOD)
	for x in xrange(7):
		on_message()
	time.sleep(TIME_PERIOD)
	for x in xrange(4):
		on_message()
	time.sleep(TIME_PERIOD)
	for x in xrange(2):
		on_message()
	time.sleep(TIME_PERIOD)
	for x in xrange(9):
		on_message()
	time.sleep(TIME_PERIOD)
	print_records()
	for x in xrange(1):
		on_message()
	time.sleep(TIME_PERIOD)
	print_records()