Best way to submit data to a form using Python?

Question

I have not worked with web programming or web forms before so I am lost here. There is a simple perl/cgi

<form method="post" action="/gestalt/cgi-pub/Kaviar.pl" enctype="multipart/form-data">

Now I tried looking at questions here, did a google search and read some about urllib2 etc. I guess I don't know enough about this to pick up from where all those left or integrate and use their examples in a meaningful way to solve my problem. Here is the page http://db.systemsbiology.net/gestalt/cgi-pub/Kaviar.pl and I want to use this page through python , submitting data and retrieving it and parse it in my script. Sample data is like this

chr1:4793
chr1:53534
chr1:53560

So the question is , can you help me how to submit data and get results back into a python script ,step by step or can you please guide me to a simple, step by step guide that teaches how to do this? Thanks

Duplicate of all of these: stackoverflow.com/search?q=%5Bpython%5D+submit+form — S.Lott
– S.Lott, Commented Oct 13, 2010 at 20:57
possible duplicate of Programmatically submitting a form in Python? — S.Lott
– S.Lott, Commented Oct 13, 2010 at 21:00

Ofri Raviv · Accepted Answer · 2010-10-13 20:22:56Z

5

This should be a good start:

import urllib, urllib2
url = 'http://db.systemsbiology.net/gestalt/cgi-pub/Kaviar.pl'
form_data = {'chr':'chr1', 'pos':'46743'} # the form takes 2 parameters: 'chr', and 'pos'
                                          # the values given in the dict are
                                          # just examples.
# the next line POSTs the form to url, and reads the resulting response (HTML
# in this case) into the variable response
response = urllib2.urlopen(url,urllib.urlencode(form_data)).read()
# now you can happily parse response.

answered Oct 13, 2010 at 20:22

Ofri Raviv

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