Parsing error for Words with setResultsName (regression in 3.2.4) #618
Description
We are using pyparsing to parse physical equation and parameter definitions. Potentially we are using it wrong, but the following (simplified) version works in 3.2.3, but fails in 3.2.4:
import string
from pyparsing import Word, Group, Suppress
IDENTIFIER = Word(
string.ascii_letters + "_", string.ascii_letters + string.digits + "_"
).setResultsName("identifier")
# very broad definition here, whether this corresponds to a valid unit string will be checked later
UNIT = Word(string.ascii_letters + string.digits + "*/.- ").setResultsName("unit")
PARAMETER_EQ = Group(
IDENTIFIER + Suppress(":") + UNIT
)
print(repr(PARAMETER_EQ.parse_string("speed : meter/second")))In 3.2.3, this prints:
ParseResults([ParseResults(['speed', 'meter/second'], {'identifier': 'speed', 'unit': 'meter/second'})], {})
whereas in 3.2.4, it fails with:
Traceback (most recent call last):
File "/home/mstimberg/scratch/pyparsing_issue.py", line 15, in <module>
print(repr(PARAMETER_EQ.parse_string("speed : meter/second")))
~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 1306, in parse_string
loc, tokens = self._parse(instring, 0)
~~~~~~~~~~~^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 933, in _parseNoCache
loc, tokens = self.parseImpl(instring, pre_loc, do_actions)
~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 5034, in parseImpl
return self.expr._parse(instring, loc, do_actions, callPreParse=False)
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 933, in _parseNoCache
loc, tokens = self.parseImpl(instring, pre_loc, do_actions)
~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 4513, in parseImpl
loc, exprtokens = e._parse(instring, loc, do_actions)
~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 937, in _parseNoCache
loc, tokens = self.parseImpl(instring, pre_loc, do_actions)
~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mstimberg/.cache/uv/archive-v0/b2gwMgK-avsJGeZiOPy1f/lib/python3.13/site-packages/pyparsing/core.py", line 3290, in parseImpl_regex
result = self.re_match(instring, loc)
^^^^^^^^^^^^^
AttributeError: 'Word' object has no attribute 're_match'From reading the changelog, it might be related to the fix for #612?
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