Hello. I am attempting to setup the simulator backend. I have followed the installation documentation and have a created a virtual environment running on a raspberry pi. When I get to the point of calling the lh.setup() command I get a RuntimeError stating that the simulation files cannot be found. Do you have any suggestions on how I might resolve this error?
Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
lh.setup()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/liquid_handler.py", line 106, in setup
self.backend.setup()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/backends/simulation/simulator_backend.py", line 104, in setup
self._run_file_server()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/backends/simulation/simulator_backend.py", line 112, in _run_file_server
raise RuntimeError("Could not find simulation files. Please run from the root of the "
INFO:websockets.server:server listening on 127.0.0.1:2121
RuntimeError: Could not find simulation files. Please run from the root of the repository.
Hi Rick. Thanks! From Terminal I am designating the source location for the virtual environment and launching IDLE Shell. From there I’ve entered the commands from the simulator documentation:
Python 3.9.2 (default, Mar 12 2021, 04:06:34)
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license()" for more information.
>>> from pylabrobot.liquid_handling import LiquidHandler
INFO:opentrons_shared_data.load:Using packaged shared data path: //home/pi/tfb/lib/python3.9/site-packages/opentrons_shared_data/data
>>> from pylabrobot.liquid_handling.backends.simulation.simulator_backend import SimulatorBackend
>>>
>>> from pylabrobot.liquid_handling.resources.hamilton import STARLetDeck
>>> sb = SimulatorBackend()
>>> lh = LiquidHandler(backend=sb, deck=STARLetDeck())
>>> lh.setup()
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
lh.setup()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/liquid_handler.py", line 106, in setup
self.backend.setup()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/backends/simulation/simulator_backend.py", line 104, in setup
self._run_file_server()
File "//home/pi/tfb/lib/python3.9/site-packages/pylabrobot/liquid_handling/backends/simulation/simulator_backend.py", line 112, in _run_file_server
raise RuntimeError("Could not find simulation files. Please run from the root of the "
INFO:websockets.server:server listening on 127.0.0.1:2121
Simulation server started at http://127.0.0.1:2121RuntimeError: Could not find simulation files. Please run from the root of the repository.
Oops, my bad. I just deployed the fixed version. Running pip install pylabrobot --upgrade should fix it.
Thanks again for reporting!
(Just to explain what happened: I forgot to upload the simulator’s html/css/js files to PyPI, it defaults to Python only, meaning the pip-version was not able to find those)