Planet Python

May 21, 2013 01:15 AM

>>> a_list = [1,2,3,4,5]
>>> b_list= [element*2 for element in a_list]
>>> b_list
[2, 4, 6, 8, 10]

>>> b_list = []
>>> for element in a_list:
...    b_list.append(element*2)
... 
>>> b_list
[2, 4, 6, 8, 10]

>>> b_list = [baloney*2 for baloney in a_list]
>>> b_list
[2, 4, 6, 8, 10]
>>> 

>>> b_list = [element for element in a_list if element%2 ==0] #ie remainder is 0 when dividing by two
>>> b_list
[2, 4]
>>> 

>>> [(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]
[(1, 3), (1, 4), (2, 3), (2, 1), (2, 4), (3, 1), (3, 4)]

>>> my_tuple = (1,2,3)
>>> my_tuple
(1, 2, 3)
>>> my_list = [1,2,3]
>>> my_list
[1, 2, 3]

>>>my_tuple[0]
1               
>>>my_tuple[0]=2
Traceback (most recent call last):                                         
  File "<stdin>", line 1, in <module>                                      
TypeError: 'tuple' object does not support item assignment    

>>> my_tuple = (1)  # no comma, so Python just thinks it's a number
>>> my_tuple  
1             
>>> my_tuple[0]  # just a number, so has no elements
Traceback (most recent call last):                                                                           
  File "<stdin>", line 1, in <module> 
TypeError: 'int' object has no attribute '__getitem__'
>>> my_tuple= (1,)
>>> my_tuple
(1,)                                                                                                                 
>>>my_tuple[0]                                                                                                       
1              

>>> my_dict={}
>>> my_tuple=("A Name",23,"A location")
>>> my_list= list(my_tuple)
>>> my_dict[my_tuple]="Client 1"
>>> my_dict[my_list]="Client 2"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'

$ sudo apt-get install libzmq-dev libevent python-virtualenv

$ virtualenv /tmp/circus
$ cd /tmp/circus
$ bin/pip install circus
$ bin/pip install circus-web
$ bin/pip install chaussette

$ bin/chaussette

[circus]
stats_endpoint = tcp://127.0.0.1:5557
httpd = 1

[watcher:webapp]
cmd = bin/chaussette --fd $(circus.sockets.web)
numprocesses = 3
use_sockets = True

[socket:web]
host = 127.0.0.1
port = 9999

$ bin/circusd --daemon circus.ini

$ bin/circusctl
circusctl 0.7.1
circusd-stats: active
circushttpd: active
webapp: active
(circusctl)

(circusctl) help

Documented commands (type help <topic>):
========================================
add     get            list         numprocesses  quit     rm      start   stop
decr    globaloptions  listen       numwatchers   reload   set     stats
dstats  incr           listsockets  options       restart  signal  status

Undocumented commands:
======================
EOF  help

(circusctl) list webapp
13712,13713,13714
(circusctl) incr webapp
4
(circusctl) list webapp
13712,13713,13714,13973

$ bin/circus-top

$ bin/circusctl quit
ok

>>> from sympy import nextprime
>>> nextprime(10**11)
100000000003L
>>> nextprime(10**11, 2)
100000000019L
>>> from sympy import prevprime
>>> prevprime(10**12)
999999999989L
import pytumblr
import sys

client = pytumblr.TumblrRestClient(
    '<consumer_key>',
    '<consumer_secret>',
    '<oauth_token>',
    '<oauth_secret>',
)

client.create_photo("your blog url", state="published" , data=sys.argv[1])

<path-to-python>python.exe <path_to_script>poster.py "%1"

#!/usr/bin/python

import sys

try:
  filename = sys.argv[1]
except IndexError:
  print "This command needs exactly 1 parameter!"
  sys.exit()

data = open(filename, 'r').read()
data = data.replace('{%', '{! templatetag openblock !}').replace('%}', '{! templatetag closeblock !}')
data = data.replace('{{', '{% templatetag openvariable %}').replace('}}', '{% templatetag closevariable %}')

print data.replace('{!', '{%').replace('!}', '%}')

It's that time again! Planning for PyCon 2014 is well underway, and we're currently preparing for the launch of our new site. With the launch comes a unique opportunity: Is your organization interested in being a launch day sponsor?

PyCon 2013 launched on July 9, 2012 with 21 sponsors pledging support, leading the charge that drew over 150 organizations to pitch in to the biggest and best Python conference yet. We're planning a similar go-live date for the 2014 site, and we're building up our cadre of supporters for the April 9-17 conference taking place in Montreal, Quebec, Canada.

Your organization's support enables PyCon to do the awesome things that it does. 2013 introduced a number of new events that we've heard great feedback on, so we'd like to keep doing those things and more. For example, the inaugural Young Coders tutorial was such a hit that there are already plans around the world for user groups to replicate it, and we're looking forward to doing a PyCon 2014 rendition. Programs like Financial Aid, which saw its budget increased and then quickly doubled to reach $100,000 USD, are greatly enhanced by the giving of sponsors.

Along with benefiting the community, sponsorship of PyCon brings many benefits to its supporters. We hear it year after year that there is no better place to hire Python developers than at PyCon. We offer sponsors a place on our site to promote their open positions, and we run a job fair on-site that has been a huge success. The Expo Hall is a great place to market your latest projects and to network with 2,000 eager Python developers. The value is unparalleled in the conference scene, especially after considering our flexibility to work with each and every organization. We even offer a 50% discount to organizations under 25 people. See https://us.pycon.org/2013/sponsors/whysponsor/ for more thoughts.

While we're still finalizing the sponsorship prospectus, it will be very similar to the one we used in 2013 at https://us.pycon.org/2013/sponsors/prospectus/. We'll share the details as soon as we complete them, and any questions can be forwarded to our Sponsorship Chair, Jesse Noller.

For 2014, PyCon will have a maximum capacity of 2,000 attendees. We've sold out the last two conferences and we're expecting a third, so mark your calendars for April 9-17, 2014. Other dates to remember are our Call for Proposals in July, and we're looking forward to opening registration in September. We're planning for the conference schedule to be laid out in December, just in time for the holidays.

If you don't have a passport, don't forget that Canada requires one. US residents should see http://travel.state.gov/passport/ for details.
urls
pip
easy_install
66.35.39.66     twistedmatrix.com speed.twistedmatrix.com

__name__
if __name__ == "__main__":
   main()

nuitka --execute module

__future__
sys.exc_type
sys.exc_value
sys.exc_traceback
()
git clean -dfx
PATH
check-with-pylint --emacs
nuitka.codegen.TupleCodes
_sqlite.py

Planet Python

May 21, 2013

May 20, 2013

Installation

Usage

Interaction

Next steps

May 19, 2013

May 18, 2013

New Features

Bug Fixes

New Optimization

Organizational

Cleanups

New Tests

Summary

May 17, 2013

May 16, 2013

What is PyPy?

Highlights

Possibilities

Personal development