title: How to reshape a pandas.Series
body: <p>It looks to me like a bug in pandas.Series.</p>
  
  <pre><code>a = pd.Series([1,2,3,4])
  b = a.reshape(2,2)
  b
  </code></pre>
  
  <p>b has type Series but can not be displayed, the last statement gives exception, very lengthy, the last line is "TypeError: %d format: a number is required, not numpy.ndarray". b.shape returns (2,2), which contradicts its type Series. I am guessing perhaps pandas.Series does not implement reshape function and I am calling the version from np.array? Anyone see this error as well? I am at pandas 0.9.1. </p>