joshz

/******* TEST ***********/
void Plotter::addPlotPoints()
{
        m_plot = new KPlotWidget( );

        QGraphicsProxyWidget *proxy;
        QGraphicsScene scene;
        QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
        QGraphicsWidget *form = new QGraphicsWidget;

joshz

def f(m, n, t, p):
    pass

if __name__ == "__main__":
    import time
    for j in range(5):
        start1 = time.clock()
        for i in range(2000000):
            data = "100 10 2 1".split()
            f(*map(int, data))

joshz

# py 2.7 - upgrading brakes for: pil, pyzmq, lxml, ipython, numpy, pyflakes, pygame pylint, some complain about non empty build dir, easy fix

import pip
from subprocess import call

for dist in pip.get_installed_distributions():
    call("pip install --upgrade " + dist.project_name, shell=True)

joshz

def line(x0, x1, y0, y1):
    points = []

    def swap(o1, o2):
        o1 ^= o2
        o2 ^= o1
        o1 ^= o2

    steep = abs(y1-y0) > abs(x1 - x0)

joshz

from itertools import chain

for k,v in chain(d1.iteritems(), d2.iteritems(), d3.iteritems()):
    do_some_stuff(k, v)

#or

ds = d1,d2,d3
for k,v in chain.from_iterable(d.iteritems() for d in ds):
    do_some_stuff(k, v)

joshz

import email
import re
e = '''
some string with full email contents
'''

msg = email.message_from_string(e)
body = msg.get_payload()

n = re.search(r'\d+', body, re.MULTILINE)

joshz

import re
s = 'abcd<aaa>some thing <#^&*some more!#$@ </aaa> abcdefgasf <aaa>asfaf %^&*$saf  asf %$^ </aaa> <another tag> some text </another tag> <aaa>sfafaff#%%%^^</aaa>'
inside_tags = re.findall('<aaa>(.+?)</aaa>', s)
cleaned_contents = [ re.sub('\W', '_' ,content) for content in inside_tags ]

zipped = zip(inside_tags, cleaned_contents)
s
for old, new in zipped:
    s = s.replace(old, new)
print s

joshz

import random

def partial_shuffle(st, p=20):
    p = int(round(p/100.0*len(st)))
    ds = dict([(c, i) for c, i in enumerate(st)])

    shuffled = list()
    pick_index = random.choice
    add_to_list = shuffled.append
    

joshz

import time

class memoized(object):
    def __init__(self, ctl=3, ttl=2):
        self.cache = {}
        self.ctl = ctl
        self.ttl = ttl
        self._call_count = 1

    def __call__(self, func):

joshz

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!