def test_filter_str():
def iseven(x):
return x % 2 == 0
source = Stream()
s = source.filter(iseven)
assert str(s) == '<filter: iseven>'
def test_filter_none():
source = Stream()
L = source.filter(None).sink_to_list()
for i in range(10):
source.emit(i % 3)
assert L == [1, 2, 1, 2, 1, 2]
def test_filter():
source = Stream()
L = source.filter(lambda x: x % 2 == 0).sink_to_list()
for i in range(10):
source.emit(i)
assert L == [0, 2, 4, 6, 8]
def test_filter_kwargs():
source = Stream()
L = source.filter(lambda x, n=1: x % n == 0, n=2).sink_to_list()
for i in range(10):
source.emit(i)
assert L == [0, 2, 4, 6, 8]
from geostreams.client import redis_connection, read_from_redis
from threading import Thread
# Python interface to redis server
r = redis_connection()
# pubsub
p = r.pubsub()
p.subscribe("game_of_life")
# make stream
source = Stream()
s = source.filter(lambda x: x['type'] == 'message')\
.map(lambda msg: msg['data'])\
.map(lambda key: read_from_redis(r, key))
class MyThread(Thread):
def run(self):
for key in p.listen():
source.emit(key)
thread = MyThread()
import time
# curses
import curses
win = curses.initscr()
doc.title = "Streaming Conway's Game of Life"
doc.add_root(gridplot([[p2d, p1d]]))
return update
update = make_document(curdoc())
# Python interface to redis server
r = redis_connection()
# pubsub
p = r.pubsub()
p.subscribe("game_of_life")
source = Stream()
s = source.filter(lambda x: x['type'] == 'message')\
.map(lambda msg: msg['data'])\
.map(lambda key: read_from_redis(r, key))\
.map(lambda arr: (arr, arr.sum()))\
.sink(frames.append)
class MyThread(Thread):
def run(self):
for key in p.listen():
source.emit(key)
MyThread().start()
