title: why python3 asks for urllib2? when already imported urllib.request & urllib.error?
body: <p>`I tried to solve this issue in so many ways, but always I get the same error.
  if someone can tell me the solution to this error I will be very grateful.
  Here is the is code which I am currently using.</p>
  <pre><code>import pandas as pd
  import numpy
  import matplotlib.pyplot as plt
  import seaborn as sns
  !pip install lasio
  import lasio 
  #Data links
  well_path = well =&quot;https://bit.1y/wireline-data&quot;
  trajectory_path =&quot;https://bit.1y/trajectory-data&quot;
  import urllib.request
  import urllib.error
  from urllib.request import urlopen
  well= lasio.read(well_path)
  ModuleNotFoundError                       Traceback (most recent call last)
  ~\anaconda3\lib\site-packages\lasio\reader.py in open_file(file_ref, **encoding_kwargs)
  95             try:
  ---&gt; 96                 import urllib2
  ModuleNotFoundError: No module named 'urllib2'
  </code></pre>