ockquote>
<p>Constructing DataFrame from numpy ndarray:</p>
<blockquote><blockquote><blockquote><p>df2 = pd.DataFrame(np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]),
...                    columns=['a', 'b', 'c'])
df2
   a  b  c
0  1  2  3
1  4  5  6
2  7  8  9</p>
</blockquote>
</blockquote>
</blockquote>
<p>Constructing DataFrame from a numpy ndarray that has labeled columns:</p>
<blockquote><blockquote><blockquote><p>data = np.array([(1, 2, 3), (4, 5, 6), (7, 8, 9)],
...                 dtype=[("a", "i4"), 