Mark Dickinson added the comment:
This is working as expected. Python's floats use the hardware-provided _binary_
floating-point format, which can't represent every finite decimal value
exactly. I recommend reading
https://docs.python.org/3.6/tutorial/floatingpoint.html for more information.
New submission from René Podlogar:
My Python-Installations Python 2.7.12, Python 3.4.5 @linux64
and the CLI on the python.org-Website (interactive shell) affected:
Python 3.6.0 (default, Jan 13 2017, 00:00:00)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more
