473,324 Members | 2,456 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,324 software developers and data experts.

=?UTF-8?B?UmU6IGR5bmFtaWNhbGx5IGNyZWF0aW5nIGh0bWwgY29kZS B3aXRoIHB5dGhvbi4uLg==?=

This makes sense. Thanks!

I managed to get what I wanted with something similar to what you suggested:

Expand|Select|Wrap|Line Numbers
  1. print "Content-Type: text/html\n\n"
  2. html="""
  3. <html>
  4. <head>
  5. <title>
  6. data analysis site
  7. </title>
  8. </head>
  9. <body>
  10. <p>This is a test</p>
  11. <IMG SRC="%s" />
  12. <p>After image text</p>
  13. </body>
  14. </html>"""
  15.  
  16. print html % myChartsLib.myPlotType(TheData)
  17.  
and the script returns

Expand|Select|Wrap|Line Numbers
  1. f = StringIO.StringIO()
  2. pylab.savefig(f)
  3. return 'data:image/png,' + urllib.quote(f.getvalue())
  4.  
This works fine in Firefox, but not in IE7. Any ideas why?

BTW, you are right about me not having a clue about http. It's the first time I try to do something with it. May be you could point me out to some good links where I can learn.

I will take a look into Mako too.

Thanks again.

Bruno Desthuilliers <bd*****************@free.quelquepart.frwrote :
an****@anartz.cjb.net a écrit :
Sorry, my fault...

I am trying to build a web application for data analysis. Basically
some data will be read from a database and passed to a python script
(myLibs.py) to build an image as follows.

Expand|Select|Wrap|Line Numbers
  1.  f=urllib.urlopen("http://localhost/path2Libs/myLibs.py",urllib.urlencode(TheData))
  2.   print "Content-type: image/png\n"
  3.  print f.read()
  4.  f.close()
  5.  
This section behaves as expected, and I can see the chart on the
web-page.

Indeed. Using an http request to call a local script is totally
braindead, but this is another problem.
Now, I would like to add some text and possibly more charts
(generated in the same way) to my web-page.

Which one ? What you showed is a way to generate an image resource (with
mime-type 'image/png'), not an html page resource (mime-type :
text/html). Images resources are not directly embedded in html pages -
they are *referenced* from web pages (using an <imgtag), then it's up
to the user-agent (usually, the browser) to emit another http request to
get the image.

This is what I need help
with.

Not tested (obviously), but what you want is something like:

print "Content-type: text/html\n"
print """
<html>
<head>
<title>data analysis site</title>
</head>
<body>
<p>This is a trial test</p>
<img src="http://localhost/myLibs/ChartLib.py?%s" />
</body>
</html>
""" % urllib.urlencode(TheData)

My question: How can I use python to dynamically add descriptive
comments (text), and possibly more charts to the web-page?

The code you showed so far either tried to add text/html to an image
(that is, binary data), or to embed the image's binary data into
text/html. None of this makes sense. Period. The problem is not with
Python. The problem is that you can't seriously hope to do web
programming without any knowledge of the http protocol.

Also and FWIW, you'd be better using a decent templating system (mako,
cheetah, genshi, tal, whatever fits your brain) instead of generating
html that way.
--
http://mail.python.org/mailman/listinfo/python-list


Aug 11 '08 #1
1 3515
an****@anartz.cjb.net wrote:
Expand|Select|Wrap|Line Numbers
  1.     f = StringIO.StringIO()
  2.     pylab.savefig(f)
  3.     return 'data:image/png,' + urllib.quote(f.getvalue())
  4.  

This works fine in Firefox, but not in IE7. Any ideas why?
Yes. Internet Explorer doesn't support the "data:" URI scheme.

--
Carsten Haese
http://informixdb.sourceforge.net
Aug 11 '08 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

9
by: lawrence | last post by:
Someone on www.php.net suggested using a seems_utf8() method to test text for UTF-8 character encoding but didn't specify how to write such a method. Can anyone suggest a test that might work?...
4
by: Alban Hertroys | last post by:
Another python/psycopg question, for which the solution is probably quite simple; I just don't know where to look. I have a query that inserts data originating from an utf-8 encoded XML file....
12
by: Mike Dee | last post by:
A very very basic UTF-8 question that's driving me nuts: If I have this in the beginning of my Python script in Linux: #!/usr/bin/env python # -*- coding: UTF-8 -*- should I - or should I...
38
by: Haines Brown | last post by:
I'm having trouble finding the character entity for the French abbreviation for "number" (capital N followed by a small supercript o, period). My references are not listing it. Where would I...
6
by: jmgonet | last post by:
Hello everybody, I'm having troubles loading a Xml string encoded in UTF-8. If I try this code: ------------------------------ XmlDocument doc=new XmlDocument(); String s="<?xml...
6
by: archana | last post by:
Hi all, can someone tell me difference between unicode and utf 8 or utf 18 and which one is supporting more character set. whic i should use to support character ucs-2. I want to use ucs-2...
7
by: Jimmy Shaw | last post by:
Hi everybody, Is there any SIMPLE way to convert from UTF-16 to UTF-32? I may be mixed up, but is it possible that all UTF-16 "code points" that are 16 bits long appear just the same in UTF-32,...
1
by: sheldon.regular | last post by:
I am new to unicode so please bear with my stupidity. I am doing the following in a Python IDE called Wing with Python 23. äöü äöü '\xc3\xa4\xc3\xb6\xc3\xbc' u'\xe4\xf6\xfc'...
10
by: Jed | last post by:
I have a form that needs to handle international characters withing the UTF-8 character set. I have tried all the recommended strategies for getting utf-8 characters from form input to email...
23
by: Allan Ebdrup | last post by:
I hava an ajax web application where i hvae problems with UTF-8 encoding oc chineese chars. My Ajax webapplication runs in a HTML page that is UTF-8 Encoded. I copy and paste some chineese chars...
0
by: DolphinDB | last post by:
Tired of spending countless mintues downsampling your data? Look no further! In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.