Removes dangling nodes

solves CodeReclaimers#250

Hey mark I’m getting an error on this, says the trim config item is unknown. I’m importing base neat, I have it in the [NEAT] Section. Does it belong somewhere else?

Removes dangling nodes
solves CodeReclaimers#250

Hey mark I’m getting an error on this, says the trim config item is unknown. I’m importing base neat, I have it in the [NEAT] Section. Does it belong somewhere else?

Figured it out, the configuration name isn’t listed in reproduction.py
Edit: That in fact did not fix it
Edit 2: it did fix it I was just not in the actual python library for the imports

Ok back on last bit, AttributeError: 'DefaultGenome' object has no attribute 'trim_network'
more fully:
Traceback (most recent call last):
File "filename", line 43, in
winner = p.run(eval_genomes,1000)
^^^^^^^^^^^^^^^^^^^^^^^^
File "\site-packages\neat\population.py", line 110, in run
self.population = self.reproduction.reproduce(self.config, self.species,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\site-packages\neat\reproduction.py", line 104, in reproduce
member.trim_network(config.genome_config)
^^^^^^^^^^^^^^^^^^^
AttributeError: 'DefaultGenome' object has no attribute 'trim_network'

yeeted half the file names to keep my stuff safe but yeah thats a lil funky

Did you install the correct version of NEAT?
"trim_network" is a function i implemented to trim dangling nodes.

You can do it the following way (I would recommend to use a separate virtual environment)

git clone https://github.com/markste-in/neat-python.git
cd neat-python
pip install -e .

the "-e ." installs the module from the current folder as "editable project". That means you can import neat normally without local references but still make local changes to the file in the project and see the changes in the module immediately.

If you did it correctly you should see the "trim_function" in the neat-python/neat/genome.py in line 302

if you just do pip install neat it will pull neat from pypi without the changes.

Yep turns out most of my problems came from that. Though I do recommend a couple of quick fixes in your code. Just a sec

if self.reproduction_config.trim_dangling_after_n_generations_wo_improvment >= 0: for specie in species.species.values(): if generation - specie.last_improved > self.reproduction_config.trim_dangling_after_n_generations_wo_improvment: for member in specie.members.values(): member.trim_network(config.genome_config)
And at line 28, add in ConfigParameter('trim_dangling_after_n_generations_wo_improvment',int)

yeah u r right. it makes more sense that way. Gonna change it and test it and then push it

Yeah, it yelled at me when that wasn’t there so I had to put it in manually

Yeah, it yelled at me when that wasn’t there so I had to put it in manually

Depending where you add ConfigParameter('trim_dangling_after_n_generations_wo_improvment',int) you have to add trim_dangling_after_n_generations_wo_improvment at different places in the config file. Before you had to add it to the "NEAT" area. Now I changed it to the reproduction area