title: Merging two dictionaries as rows into one pandas dataframe
body: <p>My question is similar to</p>
  <p><a href="https://stackoverflow.com/questions/47561337/merging-two-dictionaries-into-one-dataframe">Merging two dictionaries into one dataframe</a></p>
  <p>but that question asked how to merge two dictionaries in one dataframe, using the dictionaries as columns. In my case, the dictionaries are the rows of the dataframe. MRE:</p>
  <p>foo = {'mean': 0.11, 'median': 0.09, 'p90': 0.24}
  bar = {'mean': 0.10, 'median': 0.09, 'p90': 0.20}</p>
  <p>I want a dataframe like this:</p>
  <pre><code>set mean median  p90
  foo 0.11   0.09 0.24
  bar 0.10   0.09 0.20
  </code></pre>
  <p>how can I create it?</p>