Create DataFrame from multiple Series
<p>I have 2 <code>Series</code>, given by:</p>

<pre><code>import pandas as pd

r = pd.Series()
for i in range(0, 10):
    r = r.set_value(i,i*3)
r.name = 'rrr'

s = pd.Series()
for i in range(0, 10):
    s = s.set_value(i,i*5)
s.name = 'sss'
</code></pre>

<p>How to I create a <code>DataFrame</code> from them?</p>