new_contents: """\
  @file exc.py
  @brief Takes an exception object and returns a dictionary suitable for use debugging the exception later.
  
  Copyright (c) 2005-2009, Donovan Preston
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  """
  
  
  import linecache
  import re
  import sys
  import traceback
  
  
  def format_exc(exc=None):
      if exc is None:
          exc_type, exc_value, exc_tb = sys.exc_info()
      else:
          exc_type, exc_value, exc_tb = exc
  
      frames = []
      while exc_tb is not None:
          f = exc_tb.tb_frame
          
          frames.append((
              f.f_code.co_name,
              f.f_code.co_filename,
              exc_tb.tb_lineno,
              [(key, value) for (key, value)
               in f.f_locals.items() if key != '__builtins__'],
              [(key, value) for (key, value)
               in f.f_globals.items() if key != '__builtins__']))
          exc_tb = exc_tb.tb_next
  
      stack_trace = []
  
      result = {
          'error': True,
          'stack-trace': stack_trace,
          'description': str(exc_type) + ": " + str(exc_value),
          'text-exception': ''.join(
              traceback.format_exception(
                  exc_type, exc_value, exc_tb))
  
          }
  
      for method, filename, lineno, local_vars, global_vars in frames:
          code = []
          vars_dict = {}
          stack_trace.append(
              {'filename': filename,
               'lineno': lineno,
               'method': method,
               'code': code,
               #'vars': vars_dict})
               })
  
          code_text = ''
          for line_number in range(lineno-2, lineno+2):
              line = linecache.getline(filename, line_number)
              code.append({'lineno': line_number, 'line': line})
              code_text += line
  
          # "self"
          for name, var in local_vars:
              if name == 'self' and hasattr(var, '__dict__'):
                  vars_dict['self'] = dict([
                      (key, value) for (key, value) in var.__dict__.items()
                      if re.search(
                          r'\Wself.%s\W' % (re.escape(key),), code_text)])
                  break
  
          # Local and global vars
          vars_dict['locals'] = dict(
              [(name, var) for (name, var) in local_vars
               if re.search(r'\W%s\W' % (re.escape(name),), code_text)])
          vars_dict['globals'] = dict(
              [(name, var) for (name, var) in global_vars
               if re.search(r'\W%s\W' % (re.escape(name),), code_text)])
  
      return result
  
subject: Move exc from mulib into eventlet