title: ModuleNotFoundError: No module named 'docopt'
body: <p>I have installed docopt by typing <code>pip3 install docopt</code> and now it is well installed: You can see it on the list</p>
  
  <pre><code>umr5558-c02gl0y6drjm:Concatenate etudiant$ pip3 list
  Package         Version
  --------------- -------
  biopython       1.71   
  buildozer       0.34   
  cycler          0.10.0 
  docopt          0.6.2  
  kiwisolver      1.0.1  
  matplotlib      2.2.2  
  nose            1.3.7  
  numpy           1.14.2 
  pexpect         4.5.0  
  pip             10.0.0 
  ptyprocess      0.5.2  
  pyparsing       2.2.0  
  python-dateutil 2.7.2  
  pytz            2018.4 
  scipy           1.0.1  
  setuptools      39.0.1 
  sh              1.12.14
  six             1.11.0 
  virtualenv      15.2.0 
  wheel           0.30.0 
  </code></pre>
  
  <p>But when I try to import docoport from docopt on python3 it raises: </p>
  
  <blockquote>
    <p>ModuleNotFoundError: No module named 'docopt'</p>
  </blockquote>
  
  <p>Does someone have an idea?</p>
  
  <p>Here is the path:</p>
  
  <pre><code>umr5558-c02gl0y6drjm:Concatenate etudiant$ pip3.6 install docopt
  Requirement already satisfied: docopt in /usr/local/lib/python3.6/site-packages (0.6.2)
  </code></pre>
  
  <p>Here is the import section: </p>
  
  <pre><code>from Bio import codonalign 
  from Bio.Align import MultipleSeqAlignment 
  from Bio.SeqRecord import SeqRecord 
  from Bio.Alphabet import IUPAC 
  from Bio.Seq import Seq from Bio import AlignIO 
  from Bio import pairwise2 
  from Bio.codonalign.codonseq import _get_codon_list, CodonSeq, cal_dn_ds 
  import scipy 
  from Bio.Align.Applications import MuscleCommandline 
  from Bio.Align import MultipleSeqAlignment 
  from scipy.linalg import expm 
  from Bio import SeqIO 
  import sys 
  import numpy as np 
  from docopt import docopt
  </code></pre>
  
  <p>Thanks </p>