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Python requests is the de facto HTTP package for Python, nice API, wonderful documentation.

I had the need to sign my requests and to change the header after the request was built, here is hooks, simply call a function pre_request and your are done:

1. def auth_sign(req):
2.     user_id = '4f47a5f21aebcedff3001234'
3.     secret_key = 'C21LHQ5R4RVO2U2UMTEZ'
4.     timestamp = str(int(time.mktime(time.gmtime())))
5.     string_to_sign = req.method + '\n' + user_id + '\n' + timestamp + '\n' + req.path_url + '\n' + req._enc_data
       sign =  base64.b64encode(hmac.new(secret_key, string_to_sign, hashlib.sha256).digest())
6.     headers = {'X-User-ID':user_id, 'X-Expires':timestamp, 'X-Signature':sign}
7.     req.headers.update(headers)
8.  
9. payload = {'name':'Test event', 'description':'Description blabla', 'category':'1'}
10. r = requests.post(API_URL + 'event', data=payload, hooks={'pre_request':auth_sign})

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I had so much pain to make it work so here is how to have a ZFS root with a raidz pool on 5 disks, specially with OVH without any console or kvm to debug the boot process.

The server has 5 disks that I put in raidz and boot on it, but this should apply to most installation.

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The MIT has created xv6: an operating system for learning purpose

This works better and takes less time to create a working environnement for xv6 on Mac Os X, than the recommandations proposed on Tools used in 6.828 simply run this 

port install i386-elf-gcc
port install qemu

And change the Makefile like this:

-#TOOLPREFIX = i386-jos-elf-
+TOOLPREFIX = i386-elf-
 
-#QEMU = 
+QEMU = /opt/local/bin/qemu-system-i386
 
-CC = $(TOOLPREFIX)gcc
+CC = $(TOOLPREFIX)gcc-4.3.2

Here is a working gdb binary simply bunzip2 it then invoke it from the xv6 directory souce tree, (tested on osx Lion).

make qemu will compile and run xv6 in qemu

make qemu-dbg will run xv6 in debug mode, run gdb-target-i386-elf and c for continue

Enjoy, thanks MIT.

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It's more a reminder to myself, gevent depends on libevent2 but the setup.py doesn't correcty look for it, a simple solution:

export CFLAGS=-I/usr/local/include
export LDFLAGS=-L/usr/local/lib
pip install gevent

change it for /opt/local/... if you are on OSX or you will get a bunch of errors

   /Developer/usr/bin/llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -pipe -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c gevent/core.c -o build/temp.macosx-10.7-x86_64-2.7/gevent/core.o
    In file included from gevent/core.c:225:
    gevent/libevent.h:9:19: error: event.h: No such file or directory
    gevent/libevent.h:38:20: error: evhttp.h: No such file or directory
    gevent/libevent.h:39:19: error: evdns.h: No such file or directory

By the way here is the ultimate stacks for python web dev ;)

pip install flask 
pip install requests
export CFLAGS=-I/usr/local/include
export LDFLAGS=-L/usr/local/lib
pip install gevent
pip instal ujson
pip install validictory

Performance are really bad for FreeBSD in KVM, one solution is to use paravirtualized driver, virIO.

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The "new" FreeBSD installer does not give you the options to simply install ZFS as root, so sad, here is how to do it.

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Gimp 2.7.3 has been released but no one ports it to OSX already here is an ugly working way.

EDIT: The macport is now up to date so no need to do this anymore !

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Nohting new here but a list of what you should read to be a better Python developer, for intermediate and advanced Pythoners, in no particular order.

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Since Sun's killers euh Oracle shutdown OpenSolaris, FreeBSD is becoming more and more attracting with ZFS port, you should really give it a try (We are back baby).

Here is a fast installation of FreeBSD with a ZFS root.

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