using ols from statsmodels.formula.api - how to remove constant term?
<p>I'm following this first example in <code>statsmodels</code> tutorial:</p>

<p><a href="http://statsmodels.sourceforge.net/devel/" rel="noreferrer">http://statsmodels.sourceforge.net/devel/</a></p>

<p>How do I specify not to use constant term for linear fit in ols?</p>

<pre><code># Fit regression model (using the natural log of one of the regressors)
results = smf.ols('Lottery ~ Literacy + np.log(Pop1831)', data=dat).fit()
</code></pre>