Python

Python: String split and for each

Categories: Python; Tagged with: Python; @ April 23rd, 2014 0:49

This example shows how to split string and do for…each in Python:

>>> rawTags = 'TAG1 TAG2 TAG3 TAGB1 TAGB2'
>>> tags = rawTags.split()
>>> tags
['TAG1', 'TAG2', 'TAG3', 'TAGB1', 'TAGB2']
>>> output = ''
>>> for tag in tags:
... output += '"' + tag + '",'
>>> output
'"TAG1","TAG2","TAG3","TAGB1","TAGB2",'

Python: Parse HTML using Beautiful Soup

Categories: Python; Tagged with: FX Rate • HTML • Python; @ April 6th, 2014 17:24

Requirement:

Get the FX rate from: http://fx.cmbchina.com/hq

Solution:

Use urllib2 to get the html, use BeautifulSoup to parse the html;

Details:

1. Get html by urllib2:

import urllib2
html = urllib2.urlopen(“http://fx.cmbchina.com/hq”).read()

2. parse the html using BeautifulSoup:

install it:

$ apt-get install python-bs4 // http://www.crummy.com/software/BeautifulSoup/bs4/doc/#installing-beautiful-soup

Python Code:

from bs4 import BeautifulSoup
soup = BeautifulSoup(html) # you may check the HTML by: print(soup.prettify())
sgRateString = soup.find(id=”realRateInfo”).find_all(‘tr’)[8].find_all(‘td’)[5].get_text()
sgRate = float(sgRateString)
print ‘SG Rate:’, sgRate

All Code:

Links

urllib2 examples: https://docs.python.org/2/library/urllib2.html#examples

BeautifulSoup Quick Start: http://www.crummy.com/software/BeautifulSoup/bs4/doc/#quick-start

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