how to detect comment in source code file ?

[Ben Finney]

vnkumbhani at gmail.com writes:

> how works python interpreter for finding comment ?

It works as specified in the language reference. In particular, see
<URL:http://docs.python.org/3/reference/lexical_analysis.html#comments>.

> if possible find nested comment ?

Python's comments are line-end comments only. The syntax does not allow
multi-line nor nested comments.

-- 
 \       “If you go flying back through time and you see somebody else |
  `\   flying forward into the future, it's probably best to avoid eye |
_o__)                                           contact.” —Jack Handey |
Ben Finney