phsteve

#!/usr/bin/python

#This is a program to calculate payouts for horse racing. The user is prompted
#for the names of the horses, then the names of the bettors, then for any number
#of bets. At the end, it displays the winnings of each bettor.

#It uses parimutuel-style betting, where the odds for each horse are calculated
#by dividing the total amount bet on all the horses by the amount bet on the
#specific horse. The people who have bet on a winning horse divide up all the 
#money bet in proportion to the relative amount of their respective bets on the 

phsteve

#The Collatz sequence is defined by the following rules on the set of positive numbers:

# n -> n/2 if n is even
# n -> 3n + 1 if n is odd

#Starting with 13, the sequence proceeds:
# 13 - 40 - 20 - 10 - 5 - 16 - 8 - 4 - 2 - 1

#Which starting number, under 1,000,000 produces the longest chain?

phsteve

#n is the total amount, L is the list of change denominations.
def change(n, L):
    if n < 0:
        return 0
    if n == 0:
        return 1
    if L == []:
        return 0
    return change(n, L[:-1]) + change(n-L[-1], L)

phsteve

Keybase proof

I hereby claim:

• I am phsteve on github.
• I am katz (https://keybase.io/katz) on keybase.
• I have a public key whose fingerprint is 1D0C 64CA 0D92 3DFC 297A 5D43 ECD4 3433 A588 AE06

To claim this, I am signing this object:

phsteve

To learn you really you need to do it a while.  But we'll discuss some techniques that are helpful.

Starting:
  clone (always, if you want to study)
  git ls-files, skim, to see where code is

Finding where some feature is implemented, bottom up:
  usually the easiest way to find anything specific
  demo example: CPython, __add__
  grep, preferably git grep, or grep foo -- $(find . -name \*.c) etc. 

phsteve

diff --git a/dispatch.py b/dispatch.py
index ba7c064..fd5f136 100644
--- a/dispatch.py
+++ b/dispatch.py
@@ -1,29 +1,36 @@
 import requests
 import json
 
-base_url = 'http://maps.googleapis.com/maps/api/distancematrix/json'
+class Client(object):

phsteve

GIST

phsteve

msg: http://lunchlady.neverware.com/centos/6/updates/repodata/1e07fe299b6b8246f02eae9fcb583c793da533ab23c1c33f842d7322e7ab424f-filelists.sqlite.bz2: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"
Trying other mirror.
Error: failure: repodata/1e07fe299b6b8246f02eae9fcb583c793da533ab23c1c33f842d7322e7ab424f-filelists.sqlite.bz2 from updates: [Errno 256] No more mirrors to try.

phsteve

Python on Mac OS X

If you're writing Python:

Do which -a python to see how many Pythons you have installed.

If you see only /usr/bin/python, then you're good to go.

If not:

phsteve

PS C:\Users\skatz> C:\salt\salt-call.bat --local chocolatey.install psget
local:
    Chocolatey v0.10.5
    Installing the following packages:
    psget
    By installing you accept licenses for the packages.
    psget v1.0.4.407 already installed.
     Use --force to reinstall, specify a version to install, or try upgrade.
    
    Chocolatey installed 0/1 packages. 0 packages failed.