[webpy] how to response a image data

[sun haiou]

i use chartdirector to make png image,so i want to use this png image
in my html file with web.py,my code are:

*********code.py**************
# coding:utf-8
import web
import simplebar

urls=(
        '/char',simplebar.char,
        '/','index'
        )
app=web.application(urls,globals())
render = web.template.render('templates/', cache=False)

class index:
        def GET(self):
#               name = "Bob"
                return render.index()

if __name__ == "__main__":
        web.application(urls,globals()).run()

*******************index.html*************
IMG:
<img src="/char">
END


*********************simplebar.py***********
# coding:utf-8
import web
from pychartdir import *

urls = (
        "",'makeChar'
        )

class makeChar:
        def GET(self):
                data = [20,30,40,50]
                labels = ['one','two','three','four']
                c = XYChart(70,70)
                c.setPlotArea(20,20,50,50)
                c.addBarLayer(data)
                c.xAxis().setLabels(labels)
#               print "Content-type:image/png\n"
                web.header("Content-type","image/png")
                return binaryPrint(c.makeChart2(PNG))

char = web.application(urls,locals())

******************************************************
i use "python code.py 80" to start server,
but when i view http://127.0.0.1/,it don't show the png image,and the
server log show:
127.0.0.1:2243 - - [15/Jun/2009 23:37:26] "HTTP/1.1 GET /" - 200 OK
塒NG
 
? Da 渮俷P1??SmCRJ(Z鍍?鄎9K8蜯M潙潁  d䲡佅*|:^G槶鯝&7櫳鼝?嗭雄擃3?#?d苴兯}/m羍
c??c 鬬f?槞怖?焴 }F  梎R?c`4lh1,"`? $甦 2&唋da虐\ 5!" d s X0?D???? ?



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"web.py" group.
To post to this group, send email to webpy@googlegroups.com
To unsubscribe from this group, send email to webpy+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/webpy?hl=en
-~----------~----~----~----~------~----~------~--~---