title: ImportError: No module named 'base' (laspy, python 3.5)
body: <p>I have a python 3.5 and when I try to import file from laspy I got the following problem:</p>
  
  <pre><code>import laspy
  import laspy.file
  
  
  Traceback (most recent call last):
    File "C:\Users\Geri\Desktop\Sync\pythonlas\envisecondwrite.py", line 2, in &lt;module&gt;
      import laspy.file
    File "C:\Python35\lib\site-packages\laspy\file.py", line 1, in &lt;module&gt;
      import base
  ImportError: No module named 'base'
  </code></pre>
  
  <p>When I played a little with it:</p>
  
  <pre><code>import laspy
  from laspy import base
  import laspy.file
  
  Traceback (most recent call last):
    File "C:\Users\Geri\Desktop\Sync\pythonlas\envisecondwrite.py", line 2, in &lt;module&gt;
      from laspy import base
    File "C:\Python35\lib\site-packages\laspy\base.py", line 2, in &lt;module&gt;
      from header import HeaderManager, Header, VLR, EVLR, ExtraBytesStruct
  ImportError: No module named 'header'
  </code></pre>
  
  <p>Then I tried:</p>
  
  <pre><code>import laspy
  from laspy import header
  from laspy import base
  import laspy.file
  
  Traceback (most recent call last):
    File "C:\Users\Geri\Desktop\Sync\pythonlas\envisecondwrite.py", line 2, in &lt;module&gt;
      from laspy import header
    File "C:\Python35\lib\site-packages\laspy\header.py", line 3, in &lt;module&gt;
      import util
  ImportError: No module named 'util'
  </code></pre>
  
  <p>When I tried this with the util, it simpye doesn't find it.</p>
  
  <pre><code>import laspy
  from laspy import util
  from laspy import header
  from laspy import base
  import laspy.file
  
  Traceback (most recent call last):
    File "C:\Users\Geri\Desktop\Sync\pythonlas\envisecondwrite.py", line 3, in &lt;module&gt;
      from laspy import header
    File "C:\Python35\lib\site-packages\laspy\header.py", line 3, in &lt;module&gt;
      import util
  ImportError: No module named 'util'
  </code></pre>
  
  <p>I'm pretty sure something wrong with the directories. Please help, thanks.</p>
  
  <p>PATH:</p>
  
  <pre><code>C:\Python35\Scripts\;C:\Python35\;
  </code></pre>
  
  <p><strong>Update:</strong>
  I uninstalled the 2.7 python and reinstalled the 3.5 Same issue...</p>