Basic Examples 
(2)
 

Start a Python session:
In[54]:=
session=StartExternalSession["Python"]
Out[54]=
ExternalSessionObject
System: Python
EvaluationCount:
None
UUID: d0a96112-0f6a-4877-a051-c9af2a9126bf

Decode a string from the IDNA format:
In[13]:=
[◼]
DecodeFromIDNA
[session,"xn--eckwd4c7c.xn--zckzah"]
Out[13]=
ドメイン.テスト