title: How to read in metadata (with tags) from a text file using Python
body: <p>The data at the start of the textfile is of this format :  </p>
  
  <pre><code>&amp;SRS
  &lt;MetaDataAtStart&gt;
  multiple=True
  Wavelength (Angstrom)=0.97587
  mode=assessment
  background=True
  issid=py11n2g
  noisy=True
  &lt;/MetaDataAtStart&gt;
  &amp;END
  Two Theta(deg)  Counts(sec^-1)
  10.0    41.0
  10.1    39.0
  10.2    38.0
  10.3    38.0
  </code></pre>
  
  <p>What method can I use to extract the metadata value of wavelenght? Would the CSV Dictionary reader work?</p>