Planet London Python

Strangest Language Feature · really

pip install
imapclient
\(e^{\pi i} = -1\)
\[P(E) = {n \choose k} p^k (1-p)^{n-k}\]
A Cross Product Formula

\[\mathbf{V}_1 \times \mathbf{V}_2 =  \begin{vmatrix}
\mathbf{i} & \mathbf{j} & \mathbf{k} \\
\frac{\partial X}{\partial u} &  \frac{\partial Y}{\partial u} & 0 \\
\frac{\partial X}{\partial v} &  \frac{\partial Y}{\partial v} & 0
\end{vmatrix}  \]

server.protocol_version = "HTTP/1.1"
$ telnet media.serve.flvio.com 80
Trying 82.118.75.220...
Connected to media.serve.flvio.com.
Escape character is '^]'.
GET /media/mediakit/thumb/moovoob/2.jpg HTTP/1.1
host:media.serve.flvio.com
Range: bytes=10-20

HTTP/1.1 206 Partial Content
Date: Thu, 03 Jul 2008 10:10:15 GMT
Server: CherryPy/2.3.0
Accept-Ranges: bytes
Content-Length: 11
Content-Range: bytes 10-20/12438
Content-Type: image/jpeg
Last-Modified: Wed, 02 Jul 2008 05:47:28 GMT

51.57.1^]
telnet> cl
Connection closed.
 $ pip install rudolf
 $ pip install disabledoc

 [nosetests]
 with-disable-docstring=1
 with-color=1

python -m imapclient.interact ...
pip install
imapclient
#!/bin/bash
git clone git://github.com/b4winckler/macvim.git
cd macvim/src
export LDFLAGS=-L/usr/lib
./configure
    --with-features=huge
    --enable-rubyinterp
    --enable-perlinterp
    --enable-cscope
    --enable-pythoninterp
    --with-python-config-dir=/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config
make
open MacVim/build/Release
echo Drag MacVim.app to your Applications directory
:python import sys; print sys.version
2.7.1 (r271:86882M, Nov 30 2010, 10:35:34)
@task
def provision-box():
  public_dns = provision_using_boto()

  local("tar cfz /tmp/end-bundle.tgz path/to/puppet_scripts/*")
  with settings(host_string=public_dns, user="ec2-user", key_filename="path/to/private_key.pem"):
    run("sudo yum install -y puppet")
    put("/tmp/end-bundle.tgz", ".")
    run("tar xf end-bundle.tgz && sudo puppet --modulepath=/home/ec2-user/path/to/puppet_scripts/modules path/to/puppet_scripts/manifests/myscript.pp")

# Reverse Proxy /myapp to an internal web service, with fail-over to a hot standby
<Proxy balancer://myappcluster>
    BalancerMember http://127.0.0.1:7825
    # the hot standby on server2
    BalancerMember http://10.0.0.2:7825 status=+H
</Proxy>
<Location /myapp>
    ProxyPass           balancer://myappcluster
    ProxyPassReverse    http://127.0.0.1:7825
    ProxyPassReverse    http://10.0.0.2:7825
</Location>

2011-07-13 00:12:22 www-data 26096 21.4  0.9 160732  5972 ?        D    Jul12   5:30 /usr/sbin/apache2 -k start
2011-07-13 00:12:25 www-data 26096 21.4  0.9 160736  6040 ?        R    Jul12   5:30 /usr/sbin/apache2 -k start
2011-07-13 00:12:22 www-data 26096 21.3  0.9 160732  5972 ?        D    Jul12   5:30 /usr/sbin/apache2 -k start
2011-07-13 00:12:22 root     26179 24.0  0.0   4220   584 ?        S    00:12   0:00 /bin/sh /home/ubuntu/tools/cpu_log

Jul 13 00:11:28 domU-12-31-39-01-F0-E5 kernel: [38837.985499] apache2 invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0

[Tue Jul 12 23:48:24 2011] [error] (12)Cannot allocate memory: fork: Unable to fork new process

<IfModule mpm_prefork_module>
    StartServers            5
    MinSpareServers         5
    MaxSpareServers        10
    MaxClients            150
    MaxRequestsPerChild     0
</IfModule>

Failed to find the necessary bits to build these modules:
_gdbm              ossaudiodev        readline        
spwd                                                  
To find the necessary bits, look in setup.py in detect_modules() for the module's name.
$ sudo port install readline
$ sudo port install gdbm
add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
add_dir_to_list(self.compiler.library_dirs, '/opt/local/lib')
add_dir_to_list(self.compiler.include_dirs, '/opt/local/include')
add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
$ ./configure --enable-framework MACOSX_DEPLOYMENT_TARGET=10.5 --with-universal-archs=all
$ make
$ make test
$ sudo make frameworkinstall
$ cd /Library/Frameworks/Python.framework/Versions/
$ sudo rm Current && sudo ln -s 2.5 Current
$ sudo ln -s /Library/Frameworks/Python.framework/Versions/3.0/bin/python3.0 /usr/local/bin/
$ sudo ln -s /Library/Frameworks/Python.framework/Versions/3.0/bin/2to3 /usr/local/bin/
ps aux  | gawk '{ if ( $3 > 20 ) { print strftime("%Y-%m-%d %H:%M:%S")" "$0 } }

* * * * * root /home/ubuntu/tools/cpu_log >> /var/log/cpu_log

2011-07-11 17:55:42 postfix   6398 29.6  0.3  39428  2184 ?        S    17:55   0:01 pickup -l -t fifo -u -c
2011-07-11 17:55:42 postfix   6398 29.6  0.3  39428  2180 ?        S    17:55   0:01 pickup -l -t fifo -u -c
2011-07-11 17:55:42 postfix   6398 29.6  0.2  39428  1556 ?        S    17:55   0:01 pickup -l -t fifo -u -c
2011-07-11 17:55:42 postfix   6398 24.6  0.2  39428  1368 ?        S    17:55   0:01 pickup -l -t fifo -u -c
2011-07-11 18:16:43 root      6440 50.0  0.0  30860   344 ?        R    18:16   0:01 pickup -l -t fifo -u -c

Planet London Python

We survived! A London Python Dojo without @ntoll

Callable object with state using generators

New Talk: Designing For Rapid Release

Simple mocking of open as a context manager

Mocks with some attributes not present

IMAPClient 0.8.1 released

mock 0.8rc2: new release and development docs

Python on Google Plus

Sphinx doctests and the execution namespace

mock 0.8 release candidate 1 and handling mutable arguments

Nothing Stranger Than This?

FLVio - Video Web Service

Persistent caching with fire-and-forget updates

Competition: Working to Keep You Enslaved?

Make It Easy to Help

Installing ReportLab's Open Source Package on a Mac

Python file with closing automatically

Boggle at the London Python Dojo

Harking Back

Blogging Mathematics

Just Testing Mathematics Setting with MathJax

Source for “Testing Mathematics” Piece

CherryPy and byte range requests? Too easy.

Trivial but powerful tips for nosetests

IMAPClient 0.8 released

New place, new time, same great Dojo

StrongSteam alpha, HackerNewsLondon, Startup-Chile

Compiling MacVim with Python 2.7

Python 2.7 regular expression cheatsheet

Amazing Mozilla Annual Report Video

mock 0.8 beta 4 released: bugfix and minor features

PyCon Submissions: Less Than a Week to Go!

ws4py – WebSocket client and server library for Python

matplotlib and numpy for Python 2.7 on Mac OS X Lion

Conflict of Interest

strongsteam – an “AppStore for A.I. and data mining tools”

Zoner - DNS management UI

Using Fabric to apply Puppet scripts

mock 0.8 beta 3 released: feature complete

FLVio video web service now encodes H.264 video

mod_proxy_balancer gets a thumbs up

chrismiles @ 2008-08-20T16:30:00

mock 0.8 beta 2:bug fix and side_effect iterables

Eddie 0.37.2 released

PyCon UK 2011

mock 0.8 beta 1: easier asserts for multiple and chained calls

High Performance Python tutorial v0.2 (from EuroPython 2011)

Mock subclasses and their attributes

Upcoming speaking event @ JAX London

Mock 0.8 alpha 2: patch.multiple, new_callable and non-callable mocks

Django testing 201 : Acceptance Tests vs Unit Tests

Not an Acceptance Test

Not a Unit Test

My Solution

An appeal for sanity

Apache and the case of the missing memory

Childish Behavior

Python 3.0 on Mac OS X with readline

Tracking down rogue processes

Limiting CPU

£ key in Windows on a US laptop keyboard, done right.

Briefed

Slides about Kwissle from yesterdays London Python Dojo

Wrong About MySpace ... and What Else?

High Performance Python Tutorial v0.1 (from my 4 hour tutorial at EuroPython 2011)