day 029 - traffic lights itertools

029/traffic_lights.py

@@ -0,0 +1,28 @@
+#!python3
+#traffic light using itertools and random modules
+
+from time import sleep
+import itertools
+import random
+
+colours = 'Red Green Amber'.split()
+rotation = itertools.cycle(colours)
+
+def rg_timer():
+	return random.randint(5,9)
+
+def light_rotation(rotation):
+	for colour in rotation:
+		if colour == 'Amber':
+			print('Caution! The light is %s.\n' % colour)
+			sleep(5)
+		elif colour == 'Red':
+			print('Stop! The light is %s.\n' % colour)
+			sleep(rg_timer())
+		else:
+			print('Go! The light is %s.\n' % colour)
+			sleep(rg_timer())
+
+
+if __name__ == '__main__':
+	light_rotation(rotation)

LOG.md

@@ -30,7 +30,7 @@
 | 026 | Apr 24, 2017 | [Simple script to retrieve #movie data from OMDb #API](026) | Get OMDB for movie data, query API by IMDB ID or title. Returns text or html. Uses request_cache to limit repeated calls to API. Could help some folks taking this [this week's challenge](http://pybit.es/codechallenge16.html) |
 | 027 | Apr 25, 2017 | [rough script to query the #warcraft #API for a character's mounts](027) | A VERY rough and simple script to query the World of Warcraft API and pull the collected mounts of a specific character. Lots of room to expand this with stripping of JSON data and specifying which data to pull. Just some fun with a new and unconmmon API! |
 | 028 | Apr 26, 2017 | [Jupyter notebook to plot and list new #Python titles on @safari by month](028) | Learning: parsing a Twitter CSV backup dump (@newsafaribooks account), matplotlib, collections, hacking iPython css |
-| 029 | Apr 27, 2017 | [TITLE](029) | LEARNING |
+| 029 | Apr 27, 2017 | [Traffic Lights script to demo #itertools cycle](029) | A nice and easy script to simulate traffic lights using `itertools.cycle` and other stdlib modules cycle. Itertools rocks! |
 | 030 | Apr 28, 2017 | [TITLE](030) | LEARNING |
 | 031 | Apr 29, 2017 | [TITLE](031) | LEARNING |
 | 032 | Apr 30, 2017 | [TITLE](032) | LEARNING |