I like to discuss a Python script in a Mathematica text cell (not execute it). How should I go about that since a copied and pasted text looks very ugly, especially without proper indentation and color coding?
Converting comment to an answer:
There is nothing out of the box to support other languages.
Style/format text manually or write a parser like here: Customizing syntax highlighting for private cell styles.
p.s. Format / Style /
"Program" looks better for code.