How to show (as output cell) the contents of a .py file with syntax highlighting?

Question

I'm aware of the %load function (formerly %loadpy) which loads the contents of a file (or URL, ...) into a new input cell (which can be executed afterwards).

I'm also aware of %less, %more and %pycat, which show the contents of a file in a pager (which means in the notebook it's shown in the split-window at the bottom of the screen).

Is there a (magic) command to load a file and show its content (with syntax highlighting) in an output cell?

I.e. something like the following but with syntax highlighting of the result:

with open('my_file.py', 'r') as f:
    print(f.read())

I want the file content to be stored with the .ipynb file but I don't want it to be executed when I do Cell -> Run All.

Is there a command similar to %psource which shows the source code in an output cell instead of a pager?

Answer 1

Example code based on answer by @Matt:

from pygments import highlight
from pygments.lexers import PythonLexer
from pygments.formatters import HtmlFormatter
import IPython

with open('my_file.py') as f:
    code = f.read()

formatter = HtmlFormatter()
IPython.display.HTML('<style type="text/css">{}</style>{}'.format(
    formatter.get_style_defs('.highlight'),
    highlight(code, PythonLexer(), formatter)))

Answer 2

No there is not way to do that with current magics, but it is pretty easy using pygments and returning IPython.display.HTML(...).