title: python deleting specific lines from a string that contain specific expressions
body: <p>i have the following string/text</p>
  <pre><code>streets_and_names = '''
  #
  street 49
   description someone lives there
   name Paul
  #
  street 51
   description no one lives there
   name no name
  #
  street 43
   description someone lives there
   name Mark
  #
  street 42
   description no one lives there
   name no name
  #
  '''
  </code></pre>
  <p>and i would like to get an output by removing the following lines from it</p>
  <pre><code> description no one lives there
   name no name
  </code></pre>
  <p>and keeping the rest as it is.</p>
  <p>does anyone has any idea?</p>
  <p>thank you.</p>