title: Python Posix path cannot concatenate str
body: <p>Using this piece of code, suggest me :</p>
  <pre><code>files = [item for item in Path('my_directory').iterdir() 
           if item.is_file()
           and item.name.startswith('str')]
  </code></pre>
  <p>I cannot use the element of list to concatenate the element ... this is the error :</p>
  <pre><code>   self.bins.append(np.genfromtxt('vorcospdf/56.72/'+j ,usecols=(0,), skip_header=0)) 
  TypeError: can only concatenate str (not &quot;PosixPath&quot;) to str
  </code></pre>