Why my python mechanize script cannot work for this specific site

I need to simulate the process of inputting an item name and clicking the search button on http://ccclub.cmbchina.com/ccclubnew/.

if I inspect directly in HTML, the search form is described with name "searchKey"

<span class="se开发者_开发知识库archinput">
     <input type="text" name="searchKey" id="searchKey" maxlength="25">
</span>

here below is the script:

import mechanize
import cookielib

# Browser
br = mechanize.Browser()

# Cookie Jar
cj = cookielib.LWPCookieJar()
br.set_cookiejar(cj)

# Browser options
br.set_handle_equiv(True)
br.set_handle_gzip(True)
br.set_handle_redirect(True)
br.set_handle_referer(True)
br.set_handle_robots(False)

# Follows refresh 0 but not hangs on refresh > 0
br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

# Want debugging messages?
br.set_debug_http(True)
br.set_debug_redirects(True)
br.set_debug_responses(True)

br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]

br.open("http://ccclub.cmbchina.com/ccclubnew/")

I get

br.select_form('searchKey')
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "build\bdist.win32\egg\mechanize\_mechanize.py", line 524, in select_form
    raise FormNotFoundError("no form matching "+description)
FormNotFoundError: no form matching name 'searchKey'

and the br.forms() is empty.

my question is: why mechanize cannot select the form which exists in html? what's the possible solution to handle this?

thanks

The input with name searchKey itself is no form. A form comes with the <form> tag, but honestly, this searchbox appears not to be part of a form; you'll have to simulate setting the text of the input and pressing it.

How about using lxml or BeatifulSoup?