BUG in depmtx reader

[sarampelka]

Summary of issue

SerpentToolsException in depmtx reader due to extra string lines

Code for reproducing the issue

Using set depmtx 1 creates a depmtx file for each burnable material. The file contains lines such as flx = x or N0 = zeros(n, 1), which are not present in the serpentTools/data depmtx_ref.m file.

Actual outcome including console output and error traceback if applicable

File ~\Documents\serpent-tools\src\serpentTools\parsers\__init__.py:154, in read(filePath, reader)
    152     loader = reader
    153 returnedFromLoader = loader(filePath)
--> [154](https://file+.vscode-resource.vscode-cdn.net/c%3A/Users/Sara/Documents/serpentRuns/RVACS-transt0/~/Documents/serpent-tools/src/serpentTools/parsers/__init__.py:154) returnedFromLoader.read()
    155 return returnedFromLoader

File ~\Documents\serpent-tools\src\serpentTools\parsers\base.py:49, in BaseReader.read(self)
     47 info("Reading {}".format(self.filePath))
     48 self._precheck()
---> [49](https://file+.vscode-resource.vscode-cdn.net/c%3A/Users/Sara/Documents/serpentRuns/RVACS-transt0/~/Documents/serpent-tools/src/serpentTools/parsers/base.py:49) self._read()
     50 info("  - done")
     51 self._postcheck()

File ~\Documents\serpent-tools\src\serpentTools\parsers\depmatrix.py:98, in DepmtxReader._read(self)
     96 # process initial isotopics
     97 line = stream.readline()
---> [98](https://file+.vscode-resource.vscode-cdn.net/c%3A/Users/Sara/Documents/serpentRuns/RVACS-transt0/~/Documents/serpent-tools/src/serpentTools/parsers/depmatrix.py:98) match = self._getMatch(line, NDENS_REGEX, 'n0 vector')
     99 line = _parseIsoBlock(stream, tempN0, match, line, NDENS_REGEX)
    100 numIso = len(tempN0)
...
     88     .format(desc, self.filePath, line))

SerpentToolsException: Depmtx reader failed to match n0 vector from run_depmtx_air2_0_0.m:
flx =  2;

Expected outcome

reader reads the lines without erroring out

Versions

Please provide the following:

• Version from serpentTools.__version__: 0.11.1.dev1+g1f6e60ede
• Python version - python --version: Python 3.11.13
• IPython or Jupyter version if applicable
• If using the development version, the output from git describe: 0.9.4rc0-47-g1f6e60e