#!/usr/bin/python
from os import listdir
from random import choice
ext2conttype = {"jpg": "image/jpeg",
"jpeg": "image/jpeg",
"png": "image/png",
"gif": "image/gif"}
def content_type(filename):
return ext2conttype[filename[filename.rfind(".")+1:].lower()]
def isimage(filename):
"""true if the filename's extension is in the content-type lookup"""
filename = filename.lower()
return filename[filename.rfind(".")+1:] in ext2conttype
def random_file(dir):
"""returns the filename of a randomly chosen image in dir"""
images = [f for f in listdir(dir) if isimage(f)]
return choice(images)
if __name__ == "__main__":
dir = "../img/"
r = random_file(dir)
#print "Content-type: %s\n" % (content_type(r))
print "Content-type:text/html\n"
print " " #Apache needs a space after content-type
header="""Mars Climate Database: The Web Interface"""
print header
print "