How to set default value for fields in odoo 8?
<p>I created a checkbox and I want to set its default value to false so that it is unchecked by default.I tried in four ways but still the checkbox is checked by default.</p>

<pre><code>raw = fields.Boolean(default=0)
raw = fields.Boolean(default='0')
raw = fields.Boolean(default=False)
raw = fields.Boolean(default='False')
</code></pre>