title: Python- Import error of peakutils
body: <p>I am trying to use <a href="https://pypi.python.org/pypi/PeakUtils" rel="nofollow noreferrer">peakutils</a> library and have installed that using </p>
  
  <pre><code>pip install peakutils
  </code></pre>
  
  <p>but when I attempt to import same in my jupyter notebook, it shows the import error
  Before this, I have never faced such an issue. 
  I don't have a PYTHONPATH set.</p>
  
  <p>Also, in <a href="https://stackoverflow.com/questions/17386880/does-anaconda-create-a-separate-pythonpath-variable-for-each-new-environment">this</a> the second answer asks for unsetting the python path by</p>
  
  <pre><code>unset PYTHONPATH
  </code></pre>
  
  <p>displays </p>
  
  <pre><code>'unset' is not recognised as an internal or external command, operable program or batch file.
  </code></pre>
  
  <p>I have checked that the package is installed in the environment I am using:</p>
  
  <pre><code>(C:\Users\DELL\Anaconda3) C:\Users\DELL&gt;activate DAND
  
  (DAND) C:\Users\DELL&gt;pip install peakutils
  Requirement already satisfied: peakutils in c:\users\dell\anaconda3\envs\dand\li
  b\site-packages
  Requirement already satisfied: scipy in c:\users\dell\anaconda3\envs\dand\lib\si
  te-packages (from peakutils)
  Requirement already satisfied: numpy in c:\users\dell\anaconda3\envs\dand\lib\si
  te-packages (from peakutils)
  </code></pre>