> People don't complain about Python not allowing unicode characters as
> identifiers (something possible in Julia for example).
For the record, Python 3 _does_ allow unicode characters in identifiers. :-)
$ python3
Python 3.7.5 (default, Oct 17 2019, 12:09:47)
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 世界 = 5
>>> print(世界)
5
Run
As far as I know this is possible since Python 3.0. See also
[https://docs.python.org/3/reference/lexical_analysis.html#identifiers](https://docs.python.org/3/reference/lexical_analysis.html#identifiers)
.