Re: [Pyparsing] Naming elements based on their predecessor

[Paul M. <pa...@al...>]

>>>>
Noticed something interesting: on a parsing object, an unknown attribute
(such as 'asdfasdfsadf') will return '' (an empty string).  Is this intended
behavior?  It makes testing for attributes via hasattr impossible.  I can
always test for an empty string, of course, but I'd rather use exceptions
and catch an AttributeError than an if/then block to see if the string is
non-emtpy.
>>>>

To test for the existence of an attribute:
- if 'alsfjlsjafs' in results:
- if results.alkjasdlfjslf == '':
  or if results.laksjdfljsd:  # evaluating to '' is a boolean false value
- results["sldflsjf"] will raise an exception if no such attribute
 
-- Paul