Only input tensors may be passed as positional arguments. The following argument value should be passed as a keyword argument: 1000 (of type <class 'int'>)

[kdimou]

I have installed Sionna by following the instructions in the page

https://nvlabs.github.io/sionna/installation.html

I tried the steps suggested therein and installed python, TensorFlow and Sionna.

Did the test

python

import sionna

print(sionna.__version__)
0.16.2

and the sionna version that appears is indeed 0.16.2

Tried to execute locally the "Hello World" by launching the jupyterLab via

python -m jupyterlab .

and the following message appears:

ValueError: Only input tensors may be passed as positional arguments. The following argument value should be passed as a keyword argument: 1000 (of type <class 'int'>)

It seems that there is an error in my environment and the tensorFlow package is not uploaded? I tried to execut the command locally at a terminal by using python (and python 3) and the same error appears.

import sionna
>>> binary_source = sionna.utils.BinarySource()
>>> b = binary_source([batch_size, num_bits_per_symbol])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/konstantinosdimou/Simulators/SionnaNewMacbook/.venv/lib/python3.11/site-packages/keras/src/utils/traceback_utils.py", line 122, in error_handler
    raise e.with_traceback(filtered_tb) from None
  File "/Users/konstantinosdimou/Simulators/SionnaNewMacbook/.venv/lib/python3.11/site-packages/keras/src/layers/layer.py", line 721, in __call__
    raise ValueError(
ValueError: Only input tensors may be passed as positional arguments. The following argument value should be passed as a keyword argument: 1000 (of type <class 'int'>)

It seems that either Tensorflow is not installed properly, or another package is missing, or the downloaded TensorFlow is not visible in my environment?

(Of course, I can run the examples and tutorials at Google Colab)

[merlinND]

Hello @kdimou,

My first guess would be about an incompatible TensorFlow version. Could you please check which version you have installed?
According to requirements.txt, the highest currently supported version is 2.15

sionna/requirements.txt

Line 1 in 7eb04f4

tensorflow >=2.10.1, !=2.11.0, <2.16.0 ; sys_platform != "darwin"

[kdimou]

Hello Merlin,

Indeed, this solved the problem. The Tensorflow version installed was the version 2.16.1. I created a virtual environment, where I installed tensorflow 2.15. Within this virtual environment I launched jupyterlab and the code now can be executed.
Below are the commands executed.

pip show tensorflow # (for checking the tensorflow version)
python3 -m venv tf215_env # (definition of virtual environment)
source tf215_env/bin/activate # (activation of virtual environment)
pip install tensorflow==2.15 # (installation of the Tensorflow version 2.15 within the virtual environment)
pip install jupyter notebook ipykernel # (installed jupyter notebook in the virtual environment)
jupyter notebook # (jupyter notebook launching)