toggle some characters like line number

First, crayon is a great plugin. Using it to highlight python codes.
A problem though. e.g.

>>> from tabulate import tabulate
>>> print tabulate(table, headers, tablefmt=”simple”)

for plain text, I would like to toggle the “>>>” like the line numbers. So that after toggling the code, viewers can easily copy the code e.g.

from tabulate import tabulate
print tabulate(table, headers, tablefmt=”simple”)