Decision (if, else) routine is not working as intended with CGI module

[epsilon]

All:

I'm running into trouble figuring this one out.  It seems that my
decision routine is not working as intended.  Does anyone know why my
output continues to utilize the "else" portion of the routine.

Thank you,
Christopher

++++++++++

#!/usr/bin/python

import cgi

print "Content-type: text/plain\n"
tag_form = cgi.FieldStorage(keep_blank_values=True)

#if not tag_form.has_key("fse00"):
if tag_form["fse00"] == "":
    fse000 = {"fse00": "0"}
    tag_form.update(fse000)
    print "Printing fse000: ", tag_form["fse00"]
else:
    print "Printing fse00: ", tag_form["fse00"]