Can we copy stack trace of Exception in a string?

[indiarocks]

Hi,

Can a stack trace be generated for the exception that the program catches using except or except IOError etc

eg:

  try:  
       raise Exception
  except Exception,e:
      print the stack trace that caused this exception

Thanks

[indiarocks]

Was looking around online and found this

import sys, traceback

def func1()
    try:
        do something that raises exception
    except:
        traceback.print_exc(file=sys.stdout)

That would print the stack trace.

[bartonc]

Was looking around online and found this

import sys, traceback

def func1()
    try:
        do something that raises exception
    except:
        traceback.print_exc(file=sys.stdout)

That would print the stack trace.

That looks like just the thing, but I'll check it out for you.

[bartonc]

Was looking around online and found this

import sys, traceback

def func1()
    try:
        do something that raises exception
    except:
        traceback.print_exc(file=sys.stdout)

That would print the stack trace.

1) You'll learn how to use code tags by reading the "POSTING GUIDELINES" or "REPLY GUIDELINES" panel on the right hand side of the page while you are posting.

2) In section 3.12 of the Python Library Reference (in the python help file) it says:
format_exc( [limit])

This is like print_exc(limit ) but returns a string instead of printing to a file. New in version 2.4.

[ghostdog74]

in your code:

....
except Exception,e:

you can just print the value of 'e' and see what it says

[bartonc]

in your code:

....
except Exception,e:

you can just print the value of 'e' and see what it says

You are just full of cool tricks. Thanks GD.

[bvdet]

Following are a couple of functions we use to format the error messages:

import sys, traceback

def formatExceptionInfo(level = 6):
    error_type, error_value, trbk = sys.exc_info()
    tb_list = traceback.format_tb(trbk, level)    
    s = "Error: %s \nDescription: %s \nTraceback:" % (error_type.__name__, error_value)
    for i in tb_list:
        s += "\n" + i
    return s

def formatExceptionInfo1():
    return '%s\n%s' % ('The script was cancelled by the user', ''.join(traceback.format_tb(sys.exc_info()[2])))

Phil Adams contributed to the first function.

[ghostdog74]

You are just full of cool tricks. Thanks GD.

no problem. Well actually its documentedhere
Also, OP has it included in his code, so i was wondering why he did not use it.

[bartonc]

no problem. Well actually its documentedhere
Also, OP has it included in his code, so i was wondering why he did not use it.

Yeah. I saw that and assumed that the OP needed the value in a string (due to the title of the post).