Traceback (most recent call last):
  File "mail_send.py", line 25, in <module>
    send_mail()
  File "mail_send.py", line 21, in send_mail
    server.sendmail(fromaddr, toaddrs, msg)
  File "/usr/local/lib/python2.7/smtplib.py", line 724, in sendmail
    raise SMTPSenderRefused(code, resp, from_addr)
smtplib.SMTPSenderRefused: (530, '5.5.1 Authentication Required.')

def custom_traceback(type, value, traceback):
    print('successfully completed')

import sys
sys.excepthook = custom_traceback

def custom_traceback(et, ev, tb):
    traceback.print_exception(et, ev, tb)

import sys
sys.excepthook = custom_traceback

from pygments import highlight
from pygments.formatters import TerminalFormatter
from pygments.lexers import PythonTracebackLexer

def custom_traceback(et, ev, tb):
    trace = "".join(traceback.format_exception(et, ev, tb))
    print(highlight(code=trace, lexer=PythonTracebackLexer(), formatter=TerminalFormatter()))

sys.excepthook = custom_traceback

et, ev, tb = einfo
frame_records = inspect.getinnerframes(tb, context)

frame, fname, lnum, func, lines, index = frame_record
args, varargs, varkw, local_vars = inspect.getargvalues(frame)

objects = cgitb.scanvars(reader, frame, local_vars)

Traceback (most recent call last):
  File "magical_print.py", line 9, in <module>
    total = sum(num1 + num2 + num3)
TypeError: unsupported operand type(s) for +: 'int' and 'str'

Pretty Traceback:

File:      /home/anand/talks/ptb/code/magical_print.py
Call:      <module>()
Context:
---------> 9 total = num1 + num2 + num
Objects:   total undefined, num1 = 1, num2 = '2', num3 = 3

TypeError: unsupported operand type(s) for +: 'int' and 'str'

et, ev, tb = einfo
frame_records = inspect.getinnerframes(tb, context)

frame, fname, lnum, func, lines, index = frame_record
if project_path in fname:
    # process frame

File:      /home/anand/talks/ptb/code/calc_slice.py
Call:      validate_step(step=None)
Context:
            8     if step == 0:
            9         raise Exception("Step cannot be zero.")
---------> 10     if step < 0:
           11         reverse = True
           12     if step is None:

if (den != 0):
    result = num / den


try:
    fh = open('pycon.txt')
except IOError:
    print('File not found')

try:
    # read PEP 3134
    # understand exception chaining
except LazyToDoThatError:
    # start using Python 3!!