resize images to create thumbnails

First you have many images.
If you want to create thumbnail for each one this is python script:

import glob 
import PIL
from PIL import Image
for infile in glob.glob("*.jpg"):
 img = Image.open(infile)
 dim_percent=(100/float(img.size[0]))
 dim_size=int((float(img.size[1])*float(dim_percent)))
 img = img.resize((100,dim_size),PIL.Image.ANTIALIAS)
 if infile[0:2] != "trumb_":
  img.save("trumb_" + infile, "JPEG")

PyGTK and GdkPixbuf

What is GdkPixbuf?
* An object holding information about images in memory.
Constructor
GdkPixbuf (GdkColorspace colorspace, bool has_alpha, int bits_per_sample, int width, int height);

Example:

>>> import pygtk
>>> import pygtk
>>> pixbuf = gtk.gdk.Pixbuf( gtk.gdk.COLORSPACE_RGB, False,8, 200, 100)
>>> pixbuf.save('/home/net/cc/a.jpg','jpeg', {'quality':'100'})

The output is :

PyGTK 2.15.2 - unstable

As you know, PyGTK is a set of Python wrappers.
Now PyGTK easily create programs with a graphical user interface using the Python programming language.
The new PyGTK version 2.15.2 and is on PyGTK 2.15.2 source.
From http://pygtk.org
"What's new since 2.15.0?
- (Add HSV support to gtk.gdk.Color objects)
- Add floating-point support to gtk.gdk.Color (Paul)
- Retire hand-written ChangeLog; autocreate from Git history (Paul)
- Fix conditional in docs/Makefile.am (Frederic Peters)
- Document that gtk.gdk.GC coordinates are not related to allocation (Paul)
- Make pygtk_boxed_unref_shared() also handle Py_None (Paul)
- Make gtk.MenuItem.set_submenu accept None (Paul)
- Don't run 'fixxref.py' if documentation is not built (Björn Lindqvist)
- Apply libtool 2.2 compatibility patch (Gian)
- Plug reference leak on main signal watch source (Paul)
- Add extra warning against accidental misuse of tree model columns (Paul)
- Wrap gtk.Border attributes and constructor (Mariano Suárez-Alvarez)
- Make gtk.gdk.Event.time accept 'long' in assignments (Paul)
- Wrap gtk.RcStyle attributes (Paul)

PyGTK requires GTK+ >= 2.8.0 and Python >= 2.3.5 to build."

Python - random passwords

This program generates passwords on the size of 10 characters.
By using a function called "random_password" that creates a password of size 10 characters.
This function called "write_file" creates a file with automatic redial function "random_password. It contains a table of 10 X 10 random passwords.

from random import *
import string
chars = string.ascii_letters + string.digits
def random_password():
 a = "".join(choice(chars) for x in range(randint(10, 10)))
 b  = a + ' | '
 return b
def write_file():
 f = open('random_pass.txt', 'wr+')
 for c in range(10):
  rand=''
  for r in range(10):
   rand = rand + random_password() 
  randpass=rand + random_password() + '\n'   
  f.write(str(randpass))
 f.close()
write_file()

Python and xml

Python is an excellent choice for writing programs that process XML data.
XML's is a simplified subset of the Standard Generalized Markup Language (SGML).
He set of tools helps developers in creating web pages.
This is one simple example which I use with "conky":

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)
    item2 = a.getElementsByTagName('SendingDate')[0].firstChild.wholeText
        print "DATA ",item2
    item = a.getElementsByTagName('Cube')
    for i in item:
        if i.hasChildNodes() == True:
                e = i.getElementsByTagName('Rate')[8].firstChild.wholeText
        d = i.getElementsByTagName('Rate')[18].firstChild.wholeText
                print "EURO  ",e
        print "DOLAR ",d

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

First step ...and some examples

So the first step to use python is how to load module.
This is simple one:

import sys
import math
from math import sin
dir(math)

['__doc__', '__file__', '__name__', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'cosh', 'degrees', 'e', 'exp', 'fabs', 'floor', 'fmod', 'frexp', 'hypot', 'ldexp', 'log', 'log10', 'modf', 'pi', 'pow', 'radians', 'sin', 'sinh', 'sqrt', 'tan', 'tanh']

Next is two examples with calendar module.

import calendar
time_cal=calendar.TextCalendar(calendar.FRIDAY)
print time_cal.formatmonth(2009,02)
 February 2009
Fr Sa Su Mo Tu We Th
     1  2  3  4  5
6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28

If i use this into web page this is the solution:

import calendar
html_cal=calendar.HTMLCalendar(calendar.MONDAY)
print html_cal.formatmonth(2009,02)

February 2009
Mon
Tue
Wed
Thu
Fri
Sat
Sun






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About Python

Python is like a knife to a developer.

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Python is a remarkably powerful dynamic programming language.
Python runs on Windows, Linux/Unix, Mac OS X, OS/2, Amiga, Palm Handhelds, and Nokia mobile phones. Python has also been ported to the Java and .NET virtual machines.

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Python is distributed under an OSI-approved open source license that makes it free to use, even for commercial products.

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