ajschumacher

chi-squared test

import scipy.stats

obs = np.array([[a, b],
                [c, d]])
_, p, _, _ = scipy.stats.chi2_contingency(obs)

ajschumacher

SQL workshop!

---

Get everything you can about people.

select * from people

-- comments

ajschumacher

# inspired by and based on:
# https://julien.danjou.info/python-exceptions-guide/
# https://github.com/jd/julien.danjou.info/blob/master/bin/generate-python-exceptions-graph.py

import builtins

edges = set()
synonyms = {}
for name in dir(builtins):
    item = getattr(builtins, name)

ajschumacher

import random
import math

def mean(elements):
    return sum(elements) / len(elements)

def euclidean_dist(first, second):
    assert len(first) == len(second)
    return sum((f - s)**2 for f, s in zip(first, second))**0.5

ajschumacher

import time

import pygame
import gym


frame_time = 1.0 / 15  # seconds


pygame.init()

ajschumacher

import tensorflow as tf

w = tf.Variable([2.0])
b = tf.Variable([2.0])
x = tf.constant([1.0])
y = tf.sigmoid(w*x + b)
y_ = tf.constant([0.0])
cross_entropy = -1*(y_*tf.log(y) + (1-y_)*(tf.log(1-y)))
s = tf.Session()
s.run(tf.initialize_all_variables())

ajschumacher

This is Bostock's interactive Reingold-Tilford Tree with data representing the rules of a simple sklearn decision tree. Click on nodes to expand or collapse.

For more, see the complete write-up.

ajschumacher

def _find_getch():
    # courtesy of Louis
    # http://stackoverflow.com/questions/510357/
    try:
        import termios
    except ImportError:
        # Non-POSIX. Return msvcrt's (Windows') getch.
        import msvcrt
        return msvcrt.getch

ajschumacher

• thing

ajschumacher

Here is text with an email link.

Here is an email in text ([email protected]).

What about second-line email links?