Coding With Cody » Python

Python 2.7 on CentOS 5.6

Cody Snider — Wed, 04 Jan 2012 03:55:28 +0000

Here you have it, folks. A shell script that will handle all the ugliness associated with installing Python 2.7 on CentOS 5.6 (and probably CentOS 5.7, too).

Use the following command in your shell (the easy way):

wget -q -O http://codingwithcody.com/downloads/python_27_on_centos_56/install.sh | sh

Alternately, you can download and run it manually: Download install.sh

Here are the tarballs used just in case the servers hosting them go down and you’re eager to get Python 2.7 working:

And, just FYI, here’s the contents of install.sh:

View Code BASH

yum -y install gcc gdbm-devel readline-devel ncurses-devel zlib-devel bzip2-devel sqlite-devel db4-devel openssl-devel tk-devel bluez-libs-devel make
 
cd /var/tmp
wget http://sqlite.org/sqlite-amalgamation-3.7.3.tar.gz
tar xfz sqlite-amalgamation-3.7.3.tar.gz
cd sqlite-3.7.3/
./configure
make
make install
 
cd /var/tmp
wget http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz
tar xvfz Python-2.7.1.tgz
cd Python-2.7.1
./configure --prefix=/opt/python2.7.1 --with-threads --enable-shared
make
make install
 
touch /etc/ld.so.conf.d/opt-python2.7.1.conf
echo "/opt/python2.7.1/lib/" >> /etc/ld.so.conf.d/opt-python2.7.1.conf
ldconfig
 
ln -sf /opt/python2.7.1/bin/python /usr/bin/python2.7
 
cd /var/tmp
wget http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11-py2.7.egg
sh setuptools-0.6c11-py2.7.egg --prefix=/opt/python2.7.1
 
/opt/python2.7.1/bin/easy_install pip
ln -sf /opt/python2.7.1/bin/pip /usr/bin/pip
 
pip install virtualenv
ln -sf /opt/python2.7.1/bin/virtualenv /usr/bin/virtualenv
 
mv /usr/bin/python /usr/bin/python-backup
ln -s /usr/bin/python2.7 /usr/bin/python

Any improvements are more than welcome. Enjoy and happy coding!

Generate Random IP with Python

Cody Snider — Mon, 17 May 2010 18:09:13 +0000

In need of an IP address on-the-fly that appears to be valid? Try this:

View Code PYTHON

from random import randrange
 
def generateIP():
    blockOne = randrange(0, 255, 1)
    blockTwo = randrange(0, 255, 1)
    blockThree = randrange(0, 255, 1)
    blockFour = randrange(0, 255, 1)
    print 'Random IP: ' + str(blockOne) + '.' + str(blockTwo) + '.' + str(blockThree) + '.' + str(blockFour)
    if blockOne == 10:
        return self.__generateRandomIP__()
    elif blockOne == 172:
        return self.__generateRandomIP__()
    elif blockOne == 192:
        return self.__generateRandomIP__()
    else:
        return str(blockOne) + '.' + str(blockTwo) + '.' + str(blockThree) + '.' + str(blockFour)

We’re skipping 10.x.x.x, 172.x.x.x and 192.x.x.x due to the fact that these are reserved address. RFC 1918

Version 2:

An elegant solution to serve the purpose of generating a random IP provided by Ben (explanation of changes listed in the comments below):

View Code PYTHON

from random import randrange
if __name__=="__main__":
    not_valid = [10,127,169,172,192]
 
    first = randrange(1,256)
    while first in not_valid:
    first = randrange(1,256)
 
    ip = ".".join([str(first),str(randrange(1,256)),
    str(randrange(1,256)),str(randrange(1,256))])
    print ip

WordZe API Python Script

Cody Snider — Sun, 19 Jul 2009 00:04:49 +0000

Can be run from the command line or in another application. Built for Python 2.4 with pyCURL

View Code PYTHON

import sys, pycurl, re, time, string, urllib
from datetime import date
import xml.dom.minidom
 
class WordZe:
 
	def __init__(self, key='ADD YOUR KEY HERE'):
		self.apiKey = key
		self.caretakerObj = WordZeCaretaker()
		self.userAgent = 'Mozilla/5.0 (Windows; U; Windows NT 6.1; es-ES; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)'
 
	def singleKeywordLookup(self, keyList = []):
		if len(keyList) == 0:
			raise Error('You need to pass a list to the singleKeywordLookup to perform a request.')
		else:
			# TODO: DB CHECK FOR VALUE PULLED WITHIN LAST 30 DAYS
			keyString = string.join(keyList, ',')
 
			requestObj = pycurl.Curl()
 
			requestObj.setopt(pycurl.USERAGENT, self.userAgent)
			requestObj.setopt(pycurl.FOLLOWLOCATION, 1)
			requestObj.setopt(pycurl.WRITEFUNCTION, self.caretakerObj.remotecallback)
			requestObj.setopt(pycurl.HTTPGET, 1)
 
			keyString = str(keyString).replace(' ','+')
			requestObj.setopt(pycurl.URL, str('http://api.wordze.com/KeywordSingle?ApiKey=' + str(self.apiKey) + '&Query=' + str(keyString)))
			requestObj.perform()
			requestObj.close()
 
			return self.caretakerObj.getDict()
 
class WordZeCaretaker:
 
	def __init__(self):
		self.contents = ''
 
	def getDict(self):
		docMod = xml.dom.minidom.parseString(self.contents)
		return self.handleKeywords(docMod)
 
	def handleKeywords(self, docMod):
		returnDict = []
		keywords = docMod.getElementsByTagName("Keyword")
		for keyword in keywords:
			keyDict = {
			    'keyword':self.getText(keyword.childNodes),
			    'count':int(keyword.attributes['Count'].value),
			    'estimated':int(keyword.attributes['Estimated'].value)
			    }
			returnDict.append(keyDict)
		# TODO: DB INSERT
 
		return returnDict
 
	def getText(self,nodelist):
		rc = ""
		for node in nodelist:
			if node.nodeType == node.TEXT_NODE:
				rc = rc + node.data
		return rc
 
	def remotecallback(self, buf):
		self.contents = self.contents + buf
 
if __name__ == '__main__':
	lookupObj = WordZe()
	keywords = raw_input('Comma sep, no spaces list of terms: ')
	termList = str(keywords).split(',')
	cleanList = []
	for term in termList:
		cleanList.append(str(term))
	lookupObj.singleKeywordLookup(cleanList)