pyprint

def pyprint(myfile, lexer_override=""):
    from pygments import highlight
    from pygments.lexers import PythonLexer, guess_lexer, get_lexer_by_name
    from pygments.util import ClassNotFound
    from pygments.formatters import HtmlFormatter
    import IPython
    
    try:
        with open(myfile) as f:
            code = f.read()
    except IOError:
        code = myfile
    
    if lexer_override == "":
        try:
            lexer = guess_lexer(code)
        except ClassNotFound:
            lexer = get_lexer_by_name('text')
    else:
        lexer = get_lexer_by_name(lexer_override)
        
    formatter = HtmlFormatter()
    return IPython.display.HTML('<style type="text/css">{}</style>{}'.format(
        formatter.get_style_defs('.highlight'),
        highlight(code, lexer, formatter)))

2 changes to make this more general:

from pygments.lexers import PythonLexer, guess_lexer
highlight(code, guess_lexer(code), formatter)))

• made definition of lexer more general.
• added override so lexer can be specified.
• if no override and guess_lexer fails, use generic text lexer