title: Could not find a version that satisfies the requirement statsmodels.api [ Python ]
body: <p>When I try pip install statsmodels.api command,
  I had these errors</p>
  <p>ERROR: Could not find a version that satisfies the requirement statsmodels.api (from versions: none)
  ERROR: No matching distribution found for statsmodels.api</p>
  <p>Python version is Python 3.8.5</p>
  <p>C:\Windows\system32&gt;pip install statsmodels</p>
  <p>Requirement already satisfied: statsmodels in c:\python38\lib\site-packages (0.12.0)
  Requirement already satisfied: numpy&gt;=1.15 in c:\python38\lib\site-packages (from statsmodels) (1.19.1)
  Requirement already satisfied: patsy&gt;=0.5 in c:\python38\lib\site-packages (from statsmodels) (0.5.1)
  Requirement already satisfied: pandas&gt;=0.21 in c:\python38\lib\site-packages (from statsmodels) (1.1.2)
  Requirement already satisfied: scipy&gt;=1.1 in c:\python38\lib\site-packages (from statsmodels) (1.5.2)
  Requirement already satisfied: six in c:\python38\lib\site-packages (from patsy&gt;=0.5-&gt;statsmodels) (1.15.0)
  Requirement already satisfied: python-dateutil&gt;=2.7.3 in c:\python38\lib\site-packages (from pandas&gt;=0.21-&gt;statsmodels) (2.8.1)
  Requirement already satisfied: pytz&gt;=2017.2 in c:\python38\lib\site-packages (from pandas&gt;=0.21-&gt;statsmodels) (2020.1)</p>