python3-tango cannot be installed: invalid syntax

[Jan Kotanski]

When I try to install python3-tango I get the following message:

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  python3-pytango
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 1.170 kB of archives.
After this operation, 8.625 kB of additional disk space will be used.
Get:1 http://de.archive.ubuntu.com/ubuntu xenial/universe amd64 python3-pytango amd64 8.1.8-1 [1.170 kB]
Fetched 1.170 kB in 0s (4.878 kB/s)
Selecting previously unselected package python3-pytango.
(Reading database ... 278298 files and directories currently installed.)
Preparing to unpack .../python3-pytango_8.1.8-1_amd64.deb ...
Unpacking python3-pytango (8.1.8-1) ...
Setting up python3-pytango (8.1.8-1) ...
  File "/usr/lib/python3/dist-packages/PyTango/tango_gevent.py", line 56
    raise result.error_string, None, result.tb
                             ^
SyntaxError: invalid syntax

dpkg: error processing package python3-pytango (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 python3-pytango
E: Sub-process /usr/bin/dpkg returned an error code (1)

[Jan Kotanski (jankotan)]

The bug appears in ubuntu 16.04