lib: print Python executable path using UTF-8

[huseyinacacak-janea]

Checklist

• npm install && npm run lint && npm test passes
• commit message follows commit guidelines

Description of change

The Python executable path may have non-ASCII characters, which can make the print function fail if the environment encoding is different. This PR fixes this issue by using stdout.buffer, which can be used with UTF-8 encoding for the output, regardless of the environment encoding.

Fixes: #2829
Refs: #2987

[cclauss]

Using the Python REPL, can you create an example where print() fails but sys.stdout.buffer.write() succeeds?

% python3

>>> import sys
>>> msg = "Héllø"
>>> print(msg)
Héllø
>>> sys.stdout.buffer.write(msg.encode("utf-8"))
Héllø7
>>> msg.encode("utf-8")
b'H\xc3\xa9ll\xc3\xb8'

[huseyinacacak-janea]

Using the Python REPL, can you create an example where print() fails but sys.stdout.buffer.write() succeeds?

% python3

>>> import sys
>>> msg = "Héllø"
>>> print(msg)
Héllø
>>> sys.stdout.buffer.write(msg.encode("utf-8"))
Héllø7
>>> msg.encode("utf-8")
b'H\xc3\xa9ll\xc3\xb8'

Here is my example REPL.

>>> import sys
>>> sys.stdout.reconfigure(encoding="cp850")
>>> msg = "ü"
>>> print(msg)
�
>>> sys.stdout.buffer.write(msg.encode("utf-8"))
ü2
>>>

This PR aims to print the executable with UTF-8 encoding, regardless of the environment encoding. As my environment is UTF-8 by default, I forced it to change the encoding in REPL by adding the line: sys.stdout.reconfigure(encoding="cp850")

[cclauss]

Nice example! Thanks...

The trailing digit worried me, but now I see it is the return value of the number of bytes written.

>>> sys.stdout.buffer.write(msg.encode("utf-8"))
ü2
>>> _bytes_written = sys.stdout.buffer.write(msg.encode("utf-8"))
ü