title: Pyodbc.drivers() returning an empty list on Mac
body: <p>I'm attempting to access an SQL Database using sqlalchemy, but I seemingly don't have any ODBC drivers installed. I've followed Microsoft's instructions on installing ODBC drivers via Homebrew here:</p>
  <p><a href="https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/install-microsoft-odbc-driver-sql-server-macos?view=sql-server-2017" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/install-microsoft-odbc-driver-sql-server-macos?view=sql-server-2017</a></p>
  <p>But still am turning up short. When I perform pip install pyodbc, it returns that it's installed. However, when I search for the drivers, I just get an empty list:</p>
  <pre><code>In[1]: import pyodbc
  In[2]: pyodbc.drivers()
  Out[2]: []
  </code></pre>
  <p>Thanks in advance.</p>