title: Pandas 1.0.0 incompatibility with python 3.5
body: <p>I have a virtual environment with <code>python 3.5.2</code> installed.</p>
  
  <p>If I try to install Pandas with a fake version number, by doing for example <code>pip install Pandas==x</code>i can see that the matching distributions are:</p>
  
  <blockquote>
    <p>Could not find a version that satisfies the requirement Pandas==x.x.
    (from versions: 0.1, 0.2b0, 0.2b1, 0.2, 0.3.0b0, 0.3.0b2, 0.3.0,
    0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.5.0, 0.6.0, 0.6.1, 0.7.0rc1, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.8.0rc1, 0.8.0rc2, 0.8.0, 0.8.1, 0.9.0, 0.9.1, 0.10.0, 0.10.1, 0.11.0, 0.12.0, 0.13.0, 0.13.1, 0.14.0, 0.14.1, 0.15.0, 0.15.1, 0.15.2, 0.16.0, 0.16.1, 0.16.2, 0.17.0, 0.17.1, 0.18.0, 0.18.1, 0.19.0rc1, 0.19.0, 0.19.1, 0.19.2, 0.20.0rc1, 0.20.0, 0.20.1, 0.20.2, 0.20.3, 0.21.0rc1, 0.21.0, 0.21.1, 0.22.0, 0.23.0rc2, 0.23.0, 0.23.1, 0.23.2, 0.23.3, 0.23.4, 0.24.0rc1, 0.24.0, 0.24.1, 0.24.2, 0.25.0rc0, 0.25.0, 0.25.1, 0.25.2, 0.25.3, 1.0.0rc0, 1.0.0) No matching distribution found for Pandas==x</p>
  </blockquote>
  
  <p>This means that Pandas==1.0.0 should be available, however, when I try to install it I get the following error:</p>
  
  <blockquote>
  <pre><code>Traceback (most recent call last):
    File "&lt;string&gt;", line 1, in &lt;module&gt;
    File "/tmp/pip-build-uc6w1vdn/pandas/setup.py", line 42
      f"numpy &gt;= {min_numpy_ver}",
                                ^
  SyntaxError: invalid syntax
  </code></pre>
  </blockquote>
  
  <p>Because it uses f-string, available from python 3.6 onwards.</p>
  
  <p>Why does pip show incompatible versions? Shouldn't it show only versions I am able to install?</p>