title: Pip: adding directory to PATH
body: <p>I am completely overwhelmed with installing Python3 and Pip.
  After running <code>brew install Python3</code> it seems like Python3 was successfully installed.</p>
  
  <p>Now I tried to run Scrapy again but this error occurs:</p>
  
  <pre><code>-bash: /usr/local/bin/scrapy: /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory
  </code></pre>
  
  <p>I guess because the Python version changed?
  So I tried to uninstall Scrapy which needs pip.</p>
  
  <p>Here comes the next issue - after installing pip like explained here (<a href="https://pip.pypa.io/en/stable/installing/#install-pip" rel="nofollow noreferrer">https://pip.pypa.io/en/stable/installing/#install-pip</a>) I see this error:</p>
  
  <pre><code>Clms:~ userName$ python3 -m pip install -U --force-reinstall pip
  Collecting pip
    Using cached pip-20.0.2-py2.py3-none-any.whl (1.4 MB)
  Installing collected packages: pip
    Attempting uninstall: pip
      Found existing installation: pip 20.0.2
      Uninstalling pip-20.0.2:
        Successfully uninstalled pip-20.0.2
    WARNING: The scripts pip, pip3 and pip3.7 are installed in '/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/bin' which is not on PATH.
    Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  Successfully installed pip-20.0.2
  </code></pre>
  
  <p>I truly have no idea how to fix that mess.
  Googled for hours, tried a lot but could not figure out to resolve this situation.
  Most explanations I encounter require more knowledge about this topic and one leads to the other.</p>
  
  <p>I would be highly grateful for a rescue!</p>
  
  <p>Thanks!</p>