OpenCO2.py

"""
Learn to download and save a CSV file
open it and read the data
"""
import sys
from itertools import islice
import urllib2
# CO2.csv source
url = 'http://pchart.sourceforge.net/Resources/CO2.csv'
# Open the URL
f = urllib2.urlopen(url)
# Read the URL as data
data = f.read()
# Open a file to write the data to
# Notice mode is open as wb " binary This also works to save images
with open("co2.csv", "wb") as code:
    # With the file is open write the data to it.
    code.write(data)
    
filename = "co2.csv"
# Open the filename you just downloaded
f = open(filename)
## Read the first line 
line = f.readline()
with open(filename) as myfile:
    head = list(islice(myfile,1))
print "HEAD :",head,"\n\n"
# If the file is not empty keep reading line one at a time
## till the file is empty
x = 0
while line :
    while x <10:
        line = f.readline()
        x = x +1 
        print line
        
    f.close()
    sys.exit()