pygame - using sound, mixer, volume, channels, fade-in and out effect .

PyGame module come with sound feature and this allow users to test some effects.
The next tutorial show you how to deal with pygame sound effect.
After, you can test all effects with python version 3.4.1 .
I used keys to change effects. The song is a ogg file.
I used this sample from a recording of of the album Through the Devil Softly by the artist Hope Sandoval and The Warm Inventions from here.

IronPython - new version and default project.

IronPython was released.
As you know the IronPython come with version 2.7.5.
About IronPython you can find more here:
IronPython is an open-source implementation of the Python programming language which is tightly integrated with the .NET Framework. IronPython can use the .NET Framework and Python libraries, and other .NET languages can use Python code just as easily.
Download the IronPython last version from here.
I use binaries instaler and this make all working.
When I used Microsoft Visual Studio Express 2013 for Windows Desktop I saw the binaries not working well.
Also this have a python tool and this will make all download to working well.
Just try it , restart it and will see after this new projects:

Make a new project with Python Application.
The project come with default project: "Hello world"
Just add this :

import sys
print(sys.version)

The result wil be this:

Hello World
3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:45:13) [MSC v.1600 64 bit (AMD64)]
Press any key to continue . . .

News : PythonAnywhere come with good news.

The author Giles tells us:
Obviously, the most important thing we did was to switch out our javascript console for a new one that supports 256 colours! And slightly more sane copy + paste. And it works on Android, or at least it does on Lollipop. Giles recommends the Hackers keyboard. Still doesn't work on my blackberry though.
As you know :
PythonAnywhere is a Python development and hosting environment that displays in your web browser and runs on our servers. They're already set up with everything you need. It's easy to use, fast, and powerful. There's even a useful free plan.
I worked with PythonAnywhere and is very good. Thank you Giles.

YARA python module - part 001 .

You can also see more python tutorial on free-tutorials.org.
YARA is a multi-platform program running on Windows, Linux and Mac OS X.
More about yara python module can be see it here
YARA used this keywords with rules under files.

all  and  any  ascii  at  condition  contains
entrypoint  false  filesize  fullword  for  global  in
import  include  int8  int16  int32  int8be  int16be
int32be  matches  meta  nocase  not  or  of
private  rule  strings  them  true  uint8  uint16
uint32  uint8be  uint16be  uint32be  wide

The Yara documentation can be found in this link.
The yara python module use version 1.7.7 and this will need to use when make rules.
Instalation with pip :

C:\Python34>cd Scripts
C:\Python34\Scripts>pip install yara
Downloading/unpacking yara
Installing collected packages: yara
  Running setup.py install for yara

    Installing yara-ctypes-script.py script to C:\Python34\Scripts
    Installing yara-ctypes.exe script to C:\Python34\Scripts
Successfully installed yara
Cleaning up...

Let's see this in action.
First you need to make your user under your_user account.
I make one folder named yara to keep the my rules, see:

C:\\Users\\your_user\\Dropbox\\yara\\

and I test this file named doc_data.txt, from here:

C:\\Users\\your_user\\Dropbox\\

The file has this text :

InfoKey: Creator
InfoValue: TeX
InfoKey: Producer
InfoValue: pdfTeX-1.40.3
InfoKey: PTEX.Fullbanner
InfoValue: This is pdfTeX using libpoppler, Version 3.141592-1.40.3-2.2 (Web2C 7.5.6) kpathsea version 3.5.6
InfoKey: ModDate
InfoValue: D:20110210185614-08'00'
InfoKey: CreationDate
InfoValue: D:20110210185614-08'00'
PdfID0: 5691a9b61e98f4c329d4f9f6deb5363c
PdfID1: 5691a9b61e98f4c329d4f9f6deb5363c
NumberOfPages: 24

and the rule file detectstring has this rule:

rule detectstring
{
    strings:
        $my_text_string = "5691a9b61e98f4c329d4f9f6deb5363c"

    condition:
        $my_text_string 
}

You can use python shell with this source code:

import yara
from yara import *
dir(yara)
['CALLBACK_ABORT', 'CALLBACK_CONTINUE', 'INCLUDE_PATH', 'Rules', 'YARA_RULES_ROO
T', 'YaraSyntaxError', '__builtins__', '__cached__', '__doc__', '__file__', '__l
oader__', '__name__', '__package__', '__path__', '__spec__', '__version__', 'com
pile', 'libyara_wrapper', 'load_rules', 'preprocessor', 'rules', 'version']
print(yara.version.__version__)
1.7.7
rules=yara.compile("C:\\Users\\your_user\\Dropbox\\yara\\detectstring")
matches=rules.match("C:\\Users\\your_user\\Dropbox\\doc_data.txt")
print(matches)
{'main': [{'tags': [], 'matches': True, 'rule': 'detectstring', 'meta': {}, 'str
ings': [{'flags': 19, 'identifier': '$my_text_string', 'data': '5691a9b61e98f4c3
29d4f9f6deb5363c', 'offset': 326}, {'flags': 19, 'identifier': '$my_text_string'
, 'data': '5691a9b61e98f4c329d4f9f6deb5363c', 'offset': 367}]}]}

The above rule is telling YARA that the file containing the string must be reported.
The print will show the rule compiled and the result.

Windows all modules for python 3.4

Most users have a lot of problems with modules.
It's difficult to developing some script from python 2.7 to python 3.x ,common error is print.
First step in this case is to install modules.
You can found all windows modules here.
All this is packed into executable and will find your folder with your python 3.x
For example the executable module named : pygame‑1.9.2a0.win‑amd64‑py3.4.exe shows us through the contents of the file name:

• will install pygame module version 1.9.2a0 windows version
• on amd64 operating systems
• into python version 3.4

very simple to use it.

News: Wing IDE 5.0.9 Released

At september 10, 2014 the development team released the new version of Wing IDE.
See the details here: 5.0.9 - CHANGELOG.txt , also if you want to purchase licenses then you have this choices:

Wing IDE Pro:

Commercial Use
For companies, paid individuals, organizations, and government
Full-Featured Python IDE
Windows, Linux, and OS X
Includes One Year Support+Upgrades
Extend Support+Upgrades at $89/year
License is Transferable
$245 per user
$1150 5-pack

Non-Commercial Use
For students, educators, academic researchers, hobbyists, and publicly funded charities
Full-Featured Python IDE
Windows, Linux, and OS X
Optional Support+Upgrades at $89/year
$95 per user

Wing IDE Personal:
General Use
A low-cost alternative Python IDE for students and hobbyists
Omits Some Features
Windows, Linux, and OS X
Optional Support+Upgrades at $89/year
$45 per user

python book from O'Reilly Media - Save 50% .

Save 50% from O'Reilly Media.
The main goal it's to help you with the best possible performance in your Python applications.
See this book Python High Performance Programming.

Parsing feeds - get by attribute and value - part 2

Most developers use REST services or other data feeds that move data using XML.
This is a simple script to read online the xml file.
I used minidom but you can also use etree with ElementTree or cElementTree from etree.
I don't know if the ElementTree or cElementTree are more faster like minidom.
The script use urllib2 to open the file.
The file will show us the currency from each country.
The main goal of this script is : how to deal with attribute and value from xml files.
You can also see first part of this issue.
The structure of the xml file has also some attributes - currency.
Basicaly is something like this :

<!--xml version="1.0" encoding="UTF-8"?-->
-<dataset xsi:schemaLocation="http://www.bnr.ro/xsd nbrfxrates.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.bnr.ro/xsd">
-<header>
<publisher>National Bank of Romania</Publisher>
<publishingdate>2014-02-14</PublishingDate>
<messagetype>DR</MessageType>
</Header>
-<body>
<subject>Reference rates</Subject>
<origcurrency>RON</OrigCurrency>
-<cube date="2014-02-14">
<rate currency="AED">0.8909</Rate>
<rate currency="AUD">2.9529</Rate>
<rate currency="BGN">2.2913</Rate>
...

Now let see the script :

from xml.dom import minidom as dom
import urllib2

def fetchPage(url):
    a = urllib2.urlopen(url)
    return ''.join(a.readlines())

def extract(page):
    a = dom.parseString(page)

    item = a.getElementsByTagName('Rate')

    for i in item:
        if i.hasChildNodes() == True:
                print i.getAttribute('currency')+"-"+ i.firstChild.nodeValue

if __name__=='__main__':
    page = fetchPage("http://www.bnro.ro/nbrfxrates.xml")
    extract(page)

and the output is this :

AED-0.8909
AUD-2.9529
BGN-2.2913
BRL-1.3665
CAD-2.9879
CHF-3.6655
CNY-0.5394
CZK-0.1636
DKK-0.6005
EGP-0.4701
EUR-4.4813
GBP-5.4630
HUF-1.4517
INR-0.0527
JPY-3.2148
KRW-0.3078
MDL-0.2434
MXN-0.2467
NOK-0.5365
NZD-2.7388
PLN-1.0786
RSD-0.0387
RUB-0.0932
SEK-0.5074
TRY-1.4950
UAH-0.3865
USD-3.2721
XAU-137.6798
XDR-5.0505
ZAR-0.2981

My first logger python script to record keys .

Few days ago I worked with one issue : keyboard logger .
My first dilemma was: to use assemblly language or something simple like python.
My option was python - simple and fast to test how to deal with this issue.
About logger : A keyboard Logger is intended to record the keystrokes that a user inputs on a computer keyboard in addition to other user actions.
I make simple script after I search about how to deal with this.
You can see my script is simple and can be use if you want to record Python Interactive Interpreter.
I don't finish it , some keys like : backspace or enter will be put into log file.
So if you deal very well with python don't use this keys...
Anyway if I want to finish this then I need to fix this ...
Let's see the python script:

try:
 import pythoncom, pyHook, sys, logging
except:
 sys.exit()

#specials = {8:'BACKSPACE',9:'TAB',13:'ENTER', 27:'ESC', 32:'SPACE'}

specials = {9:'TAB',13:'ENTER', 27:'ESC'}
buffer = ''

def OnKeyboardEvent(event):
 try:
  logging.basicConfig(filename='C:\\aa\\log_output.txt',level=logging.DEBUG,format='%(message)s')
  global buffer
  
  if event.Ascii in range(32,127):
   print chr(event.Ascii)
   buffer += chr(event.Ascii)
  
  if event.Ascii in specials:
   print '<'+specials[event.Ascii]+'>'
   logging.log(10,buffer)
   buffer = ''
   logging.log(10,'<'+specials[event.Ascii]+'>')
   
  return True
 except:
  sys.exit()

hm = pyHook.HookManager()
hm.KeyDown = OnKeyboardEvent
hm.HookKeyboard()
pythoncom.PumpMessages()

Let's see the result of this :

The output log text file ...:

python 
<ENTER>
import os 
<ENTER>
import sys
<ENTER>

Install python on windows 8.1 with distribute, pip, virtualenv and virtualenvwrapper-powershell .

Today I wand to show you something new. The goal is using python under Windows OS (Windows 8.1).

This tutorial will cover the instalation of Python 2.7 with distribute (0.7.3), pip (1.5.2), virtualenv (1.11.2) and virtualenvwrapper-powershell.

The default instalation folder I used is under C: drive

I used python 2.7.6.

It's a executable file ... just run it.

Now you have: C:\Python27\ folder with all files.

We need to using also the fork of the Setuptools project named distribute.

Download distribute zip file from python distribute 0.7.3.

Unarhive the file under C: drive and you will have C:\distribute-0.7.3 folder.

Go to distribute and let's install it.

C:\>cd distribute-0.7.3
C:\distribute-0.7.3>\Python27\python.exe setup.py --help
C:\distribute-0.7.3>\Python27\python.exe setup.py build
C:\distribute-0.7.3>\Python27\python.exe setup.py install

Also we need to install pip , see this pip webpage.

You need to get this python script from here.

Put this script into C:\Python27 folder and use this command to install pip.

C:\Python27>python.exe get-pip.py

Under site-packages you can see the pip and distribute ...

C:\Python27\Lib\site-packages>dir /w
 Volume in drive C has no label.
 Volume Serial Number is 9AE5-9AC9

 Directory of C:\Python27\Lib\site-packages

[.]
[..]
distribute-0.7.3-py2.7.egg
easy-install.pth
[pip]
[pip-1.5.2.dist-info]
README.txt
setuptools.pth
[virtualenv-1.11.2.dist-info]
virtualenv.py
virtualenv.pyc
[virtualenvwrapper_powershell-12.7.8-py2.7.egg-info]
[virtualenv_support]

Let's see if this python modules working ...

C:\Python27>python.exe
Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import distutils
>>> import pip
>>>

Edit your environment variable by adding: ";C:\Python27\Scripts\" and ";C:\Python27\", see image below:

After that you can restart the command shell or your windows os.

I just restart the command shell and working well with the new environment vars...

Now we need to install virtualenv and virtualenvwrapper-powershell using pip:

C:\>pip install virtualenv
C:\>pip install virtualenvwrapper-powershell

The virtualenv kit provides the ability to create virtual Python environments that do not interfere with either each other, or the main Python installation.

And virtualenvwrapper-powershell it's a PowerShell clone of Doug Hellmann's virtualenvwrapper.

C:\Python27>pip list
distribute (0.7.3)
pip (1.5.2)
setuptools (0.8b2)
virtualenv (1.11.2)
virtualenvwrapper-powershell (12.7.8)

... and this is all for today.

Simple way to remove duplicates from a list.

In Python 2.5 and later you can simple remove duplicates from a python list.

Let's see one simple example ...

>>> my_list = [1,2,3,22,33,11,33,'a','b','c','a']
>>> my_list = list(set(my_list))
>>> print my_list
['a', 1, 2, 3, 33, 11, 'c', 'b', 22]

As you can see the 33 and a items is removed.

Start searching with python google module .

You can use python google module to start searching anything using this module.

First you need to install the python module using pip.

# pip install google
Downloading/unpacking google
  Downloading google-1.05.zip
  Running setup.py egg_info for package google
    
Requirement already satisfied (use --upgrade to upgrade): beautifulsoup4 
in /usr/local/lib/python2.7/dist-packages (from google)
Installing collected packages: google
  Running setup.py install for google
    changing mode of build/scripts-2.7/google.py from 644 to 755
    
    changing mode of /usr/local/bin/google.py to 755
Successfully installed google
Cleaning up...

As you can see the next step is to upgrade: beautifulsoup4 ...

# pip install --upgrade beautifulsoup4
Downloading/unpacking beautifulsoup4 from https://pypi.python.org/packages/
source/b/beautifulsoup4/beautifulsoup4-4.3.2.tar.gz#md5=
b8d157a204d56512a4cc196e53e7d8ee
  Downloading beautifulsoup4-4.3.2.tar.gz (143Kb): 143Kb downloaded
  Running setup.py egg_info for package beautifulsoup4
    
Installing collected packages: beautifulsoup4
  Found existing installation: beautifulsoup4 4.3.1
    Uninstalling beautifulsoup4:
      Successfully uninstalled beautifulsoup4
  Running setup.py install for beautifulsoup4
    
Successfully installed beautifulsoup4
Cleaning up...

Let's make a simple script to find linux word using google.com ...

>>> from google import search
>>> for url in search('linux', tld='com', lang='en', stop=2):
...     print(url)
... 
http://en.wikipedia.org/wiki/Linux
http://en.wikipedia.org/wiki/Unix-like
http://en.wikipedia.org/wiki/Linus_Torvalds
http://en.wikipedia.org/wiki/Linux_kernel
http://en.wikipedia.org/wiki/List_of_Linux_distributions
...

If you want to know more about google search function then use this:

>>> help(google.search)
Help on function search in module google:

search(query, tld='com', lang='en', num=10, start=0, stop=None, pause=2.0)
    Search the given query string using Google.
...    

... and this is all.

How I saw the Comet C/2012 S1 ISON with python .

I use sunpy python module to see the Comet C/2012 S1 ISON and SOHO LASCO C3 instrument.
This is the result:

The script is simple.

$ python
Python 2.7.3 (default, Jan  2 2013, 16:53:07) 
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sunpy
>>> from sunpy.net.helioviewer import HelioviewerClient
>>> 
>>> hv = HelioviewerClient()
>>> datasources = hv.get_data_sources()
>>> 
>>> # print a list of datasources and their associated ids
... for observatory, instruments in datasources.items():
...     for inst, detectors in instruments.items():
...         for det, measurements in detectors.items():
...             for meas, params in measurements.items():
...                 print("%s %s: %d" % (observatory, params['nickname'], params['sourceId']))
... 
Yohkoh SXT AlMgMn: 33
Yohkoh SXT thin-Al: 34
Yohkoh SXT white-light: 35
PROBA2 SWAP 174: 32
STEREO_A EUVI-A 195: 21
STEREO_A EUVI-A 304: 23
STEREO_A EUVI-A 284: 22
STEREO_A EUVI-A 171: 20
STEREO_A COR2-A: 29
STEREO_A COR1-A: 28
STEREO_B EUVI-B 195: 25
STEREO_B EUVI-B 304: 27
STEREO_B EUVI-B 284: 26
STEREO_B EUVI-B 171: 24
STEREO_B COR2-B: 31
STEREO_B COR1-B: 30
SOHO MDI Mag: 6
SOHO MDI Int: 7
SOHO EIT 195: 1
SOHO EIT 304: 3
SOHO EIT 284: 2
SOHO EIT 171: 0
SOHO LASCO C3: 5
SOHO LASCO C2: 4
SDO AIA 1700: 16
SDO AIA 211: 12
SDO AIA 335: 14
SDO AIA 1600: 15
SDO AIA 304: 13
SDO AIA 193: 11
SDO AIA 131: 9
SDO AIA 4500: 17
SDO AIA 94: 8
SDO AIA 171: 10
SDO HMI Mag: 19
SDO HMI Int: 18

This show me all instruments from sunpy. You see all instruments online here
The next step is to take one png image :

>>> hv.download_png('2013/11/29 00:15:00', 50, "[SOHO,LASCO,C3,white-light,1,100]", x0=0, y0=0, width=768, height=768)

The settings are : date and time , the image resolution (arcseconds per pixel), the SOHO LASCO C3 instrument with the layer visibility , center points and size