old_contents: 
  import code
  import logging
  import sys
  
  import fiona
  
  
  logging.basicConfig(stream=sys.stderr, level=logging.INFO)
  logger = logging.getLogger('fiona.inspector')
  
  
  def main(srcfile):
      
      with fiona.drivers(), fiona.open(srcfile) as src:
              
          code.interact(
              'Fiona %s Interactive Inspector (Python %s)\n'
              'Type "src.schema", "next(src)", or "help(src)" '
              'for more information.' %  (
                  fiona.__version__, '.'.join(map(str, sys.version_info[:3]))),
              local=locals())
  
      return 1
  
  if __name__ == '__main__':
      
      import argparse
  
      parser = argparse.ArgumentParser(
          prog="python -m fiona.inspector",
          description="Open a data file and drop into an interactive interpreter")
      parser.add_argument(
          'src', 
          metavar='FILE', 
          help="Input dataset file name")
      args = parser.parse_args()
      
      main(args.src)
  
  
new_contents: 
  import code
  import logging
  import sys
  
  import fiona
  
  
  logging.basicConfig(stream=sys.stderr, level=logging.INFO)
  logger = logging.getLogger('fiona.inspector')
  
  
  def main(srcfile):
      
      with fiona.drivers():
          with fiona.open(srcfile) as src:
              
              code.interact(
                  'Fiona %s Interactive Inspector (Python %s)\n'
                  'Type "src.schema", "next(src)", or "help(src)" '
                  'for more information.' %  (
                      fiona.__version__, '.'.join(map(str, sys.version_info[:3]))),
                  local=locals())
  
      return 1
  
  if __name__ == '__main__':
      
      import argparse
  
      parser = argparse.ArgumentParser(
          prog="python -m fiona.inspector",
          description="Open a data file and drop into an interactive interpreter")
      parser.add_argument(
          'src', 
          metavar='FILE', 
          help="Input dataset file name")
      args = parser.parse_args()
      
      main(args.src)
  
  
subject: use equivalent nested with for Python 2.6