Zlib compression and Decompression in Python
a=”ASDADASDASDASDASD”
import zlib
c = zlib.compress(a)
#to decompress
d=zlib.decompress(c)
//Bz2 Compression and Decompression in Python
import bz2
c =bz2.compress(a)
#to decompress
d=bz2.decompress(c)
Base64 encoding
import base64
page=”spmethingsadasd”
a=base64.b64encode(the_page)
print a
Base64 decoding in Python:
import base64
b=base64.b64decode(a)
print b
#!C:/Python25/python.exe -u
import MySQLdb
print “Content-type: text/html”
db=MySQLdb.connect(host=”localhost”,user=”xxxxx”,passwd=”xxxxxx”,db=”xxxxx”)
cursor=db.cursor()
import socket
timeout=1
a=1
socket.setdefaulttimeout(timeout)
from urllib2 import Request, urlopen, URLError, HTTPError
cursor.execute(’SELECT * FROM `stringf` LIMIT 20,5′)
numrows = int(cursor.rowcount)
# get and display one row at a time
x=20
for x in range(20,25):
row = cursor.fetchone()
print row[0], “–>”, row[1]
url=’http://www.’+row[1]+”
req = Request(url)
try:
response = urlopen(req)
except:
print ‘error’
else:
try:
the_page=response.read()
b=row[1]+’.txt’
f=open(b,’w')
f.write(the_page)
f.close()
except:
print ‘error’
Source code for writing contents to file in Python
file=open(’2.txt’,'w’)
file.write(’asdasdadas’)
file.close
Source code for reading a file in Python:
file=open(’2.txt’,'r’)
file1=file.read()
file.close
to see the contents of the read file simply use
print file1
Below is the code which will allow you to create folders/directories in Python
import os
os.makedirs(’C:/Python25/testing/a/dddf/’,mode=666)
This will create a directory called dddf under a and it will have permissions 666
Here is the simple example of for loop in python Code: //This line is important,This is where you declare how many times the loop should be executed in range,To execute the loop ten times you declare range(1,10):
for x in range(1,10):
print x Output: In the above loop x is the variable… and then range can be replaced by array so you do want to specify the length of the array when you are going to use array values in the for loop 123456789
After installing active state python just go to
Start->Programs->Active state Active Python 2.5 ->Interactive Shell or Python Win Editor…
You can choose Python Win Editor which is of GUI mode..
A Window will open in front of you a command prompt “>>> ”
After just enter print “My First Python Program”
and then press enter button on Keyboard your result will displayed in the next line on python editor
This is one of the simplest programs in Python and it is one of the fastest Languages. in terms of speed.
Also we can run these on any Server provided Python is installed in it….
Python is a wonderful language such that once you learn it you will say it as the best one as it’s faster than many other applications..
So how to try python
Here is the link that will give you step by step description how to install python your PC and also how to install it on local server
http://www.richarddooling.com/index.php/2006/03/14/python-on-xp-7-minutes-to-hello-world/
and this link will tel you
how to configure a httpd file for Cgi-bin to run python scripts on your local server