Check for complex synapse fails in create_dense

[Michaeljurado42]

Objective of issue: Check for complex synapse fails in create_dense

Lava DL version:

• 0.3.0 (feature release)
• 0.2.1 (bug fixes)
• [] 0.2.0 (current version)
• 0.1.2

Lava version:

• 0.4.0 (feature release)
• 0.3.1 (bug fixes)
• [] 0.3.0 (current version)
• 0.2.0
• 0.1.2

I'm submitting a ...

• bug report
• feature request
• documentation request

Current behavior:

In hdf5.py there is a line like this:

        if isinstance(layer_config["weight"], NetDict):

Expected behavior:

It should go like this

        if layer_config["complex_synapse"]

or like this

        if "weight/imag" in layer_config.f:

Steps to reproduce:

import torch
from lava.lib.dl import slayer, netx
import h5py

rf_neuron_params = {
    'threshold': 1.0,
    "period": 10, 
    "decay": .07,
}

class TestModel(torch.nn.Module):
    def __init__(self):
        super(TestModel, self).__init__()
        self.blocks = [slayer.block.rf.Dense(rf_neuron_params, 1, 1)]
    def forward(self, x):
        return self.blocks[0](x)
    def export_hdf5(self, filename):
        # network export to hdf5 format
        h = h5py.File(filename, 'w')
        layer = h.create_group('layer')
        for i, b in enumerate(self.blocks):
            b.export_hdf5(layer.create_group(f'{i}'))

model = TestModel()
model.forward(torch.zeros(1, 1, 1))
model.export_hdf5('network.net')

net = netx.hdf5.Network(net_config="network.net")

Related code:

Other information:

Error that is produced.

Traceback (most recent call last):
  File "/home/mjurado3/lava-dl/error_reproduce.py", line 28, in <module>
    net = netx.hdf5.Network(net_config="network.net")
  File "/home/mjurado3/lava-dl/.venv/src/lava/src/lava/magma/core/process/process.py", line 33, in __call__
    obj = type.__call__(cls, *args, **kwargs)
  File "/home/mjurado3/lava-dl/.venv/lib/python3.9/site-packages/lava/lib/dl/netx/hdf5.py", line 79, in __init__
    self.layers = self._create()
  File "/home/mjurado3/lava-dl/.venv/lib/python3.9/site-packages/lava/lib/dl/netx/hdf5.py", line 544, in _create
    layer, table = self.create_dense(
  File "/home/mjurado3/lava-dl/.venv/lib/python3.9/site-packages/lava/lib/dl/netx/hdf5.py", line 318, in create_dense
    if isinstance(layer_config["weight"], NetDict):
  File "/home/mjurado3/lava-dl/.venv/lib/python3.9/site-packages/lava/lib/dl/netx/utils.py", line 68, in __getitem__
    return self.f[key][()].astype(int).copy()
  File "h5py/_objects.pyx", line 54, in h5py._objects.with_phil.wrapper
  File "h5py/_objects.pyx", line 55, in h5py._objects.with_phil.wrapper
  File "/home/mjurado3/lava-dl/.venv/lib/python3.9/site-packages/h5py/_hl/group.py", line 330, in __getitem__
    raise TypeError("Accessing a group is done with bytes or str, "
TypeError: Accessing a group is done with bytes or str,  not <class 'tuple'>

[Michaeljurado42]

I'll post a fix for this soon.