I am following the instructinons from http://getopenerp.com/install-odoo-v8-ubuntu-github/ link to install odoo-8.

I have followed all the steps. All packages installed perfectly. At the the end i am getting this error.

2014-12-24 06:25:32,650 4363 CRITICAL ? openerp.modules.module: Couldn't load module web
2014-12-24 06:25:32,651 4363 CRITICAL ? openerp.modules.module: 'module' object has no attribute 'wsgi'
2014-12-24 06:25:32,651 4363 ERROR ? openerp.service.server: Failed to load server-wide module `web`.
The `web` module is provided by the addons found in the `openerp-web` project.
Maybe you forgot to add those addons in your addons_path configuration.
Traceback (most recent call last):
  File "/opt/openerp/odoo/openerp/service/server.py", line 850, in load_server_wide_modules
    openerp.modules.module.load_openerp_module(m)
  File "/opt/openerp/odoo/openerp/modules/module.py", line 319, in load_openerp_module
    getattr(sys.modules['openerp.addons.' + module_name], info['post_load'])()
  File "/home/samba/odoo-7/addons/web/http.py", line 628, in wsgi_postload
    openerp.wsgi.register_wsgi_handler(Root())
AttributeError: 'module' object has no attribute 'wsgi'
2014-12-24 06:25:32,652 4363 INFO ? openerp.service.server: HTTP service (werkzeug) running on 0.0.0.0:8069
2014-12-24 06:29:07,088 4363 INFO ? werkzeug: 127.0.0.1 - - [24/Dec/2014 06:29:07] "GET / HTTP/1.1" 500 -
2014-12-24 06:29:07,121 4363 ERROR ? werkzeug: Error on request:
Traceback (most recent call last):
  File "/usr/share/pyshared/werkzeug/serving.py", line 159, in run_wsgi
    execute(app)
  File "/usr/share/pyshared/werkzeug/serving.py", line 146, in execute
    application_iter = app(environ, start_response)
  File "/opt/openerp/odoo/openerp/service/server.py", line 281, in app
    return self.app(e, s)
  File "/opt/openerp/odoo/openerp/service/wsgi_server.py", line 216, in application
    return application_unproxied(environ, start_response)
  File "/opt/openerp/odoo/openerp/service/wsgi_server.py", line 202, in application_unproxied
    result = handler(environ, start_response)
  File "/opt/openerp/odoo/openerp/http.py", line 1238, in __call__
    self.load_addons()
  File "/opt/openerp/odoo/openerp/http.py", line 1257, in load_addons
    m = __import__('openerp.addons.' + module)
  File "/opt/openerp/odoo/openerp/modules/module.py", line 77, in load_module
    mod = imp.load_module('openerp.addons.' + module_part, f, path, descr)
  File "/home/samba/odoo-7/addons/account/__init__.py", line 22, in <module>
    import partner
  File "/home/samba/odoo-7/addons/account/partner.py", line 107, in <module>
    class res_partner(osv.osv):
  File "/home/samba/odoo-7/addons/account/partner.py", line 204, in res_partner
    required=True),
TypeError: __init__() takes exactly 1 argument (9 given)