| #!/usr/bin/env python | |
| from random import randint | |
| class BrokenRNG(): | |
| """A 'broken' Random Number Generator. Always throws 2 after 6""" | |
| last_state = None | |
| def __iter__(self): |
| #!/usr/bin/env python | |
| """Group words by their first letter""" | |
| from collections import defaultdict | |
| def group_by_letter(words): | |
| buckets = defaultdict(lambda:[]) | |
| for word in words: | |
| buckets[word[0].lower()].append(word) |
| #!/usr/bin/env python | |
| """Merging list of lists in Python using reduce()""" | |
| def merge_lists(list_of_lists): | |
| return reduce(lambda x,y: x+y, list_of_lists) | |
| if __name__ == '__main__': | |
| my_big_list = [ [1,2,3], [3,4,5], [6,7,8], ] | |
| print merge_lists(my_big_list) |
| #!/usr/bin/env python | |
| __author__ = 'Charles Hooper <charles.hooper@dotcloud.com>' | |
| import socket, ssl | |
| socket.setdefaulttimeout(3) | |
| class EasySSLWrap(object): | |
| """Connect over TCP+SSL using a context manager. | |
| Usage: |
| """Decorator to quickly add statsd (graphite) instrumentation to Celery | |
| task functions. | |
| With some slight modification, this could be used to instrument just | |
| about any (non-celery) function and be made abstract enough to customize | |
| metric names, etc. | |
| Stats reported include number of times the task was accepted by a worker | |
| (`started`), the number of successes, and the number of times the task | |
| raised an exception. In addition, it also reports how long the task took |
| class ClientWithRetry(zerorpc.Client): | |
| """Wrapper of zerorpc.Client to automatically retry failed | |
| requests.""" | |
| def __init__(self,retry_attempts,retry_delay,*args,**kwargs): | |
| self._retry_attempts = retry_attempts | |
| self._retry_delay = retry_delay | |
| zerorpc.Client.__init__(self,*args,**kwargs) | |
| def __call__(self,*args,**kwargs): |
Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discussions around concrete examples, not handy-waving abstractions. Don't say you did something, provide a URL that proves it.
Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.
Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discussions around concrete examples, not handy-waving abstractions. Don't say you did something, provide a URL that proves it.
Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.
| sub@asdf:~/projects/fsm$ irb -I | |
| irb(main):001:0> require './door.rb' | |
| => true | |
| irb(main):002:0> front_door = Door.new | |
| => #<Door:0x00000001913ab0 @state="closed"> | |
| irb(main):003:0> front_door.open_ | |
| Transition: closed => open | |
| => true | |
| irb(main):004:0> front_door.close | |
| Transition: open => closed |
| source "http://rubygems.org" | |
| gem "stripe" |