Bug#902715: python3-psycopg2 fails to install with Python 3.7

[Adrian Bunk]

Package: python3-psycopg2
Version: 2.7.5-1
Severity: serious

Setting up python3-psycopg2 (2.7.5-1+b1) ...
  File "/usr/lib/python3/dist-packages/psycopg2/tests/test_async_keyword.py", 
line 43
    self.conn = self.connect(async=True)
                                 ^
SyntaxError: invalid syntax

dpkg: error processing package python3-psycopg2 (--configure):
 installed python3-psycopg2 package post-installation script subprocess 
returned error exit status 1