ModuleNotFoundError: No module named 'flightrl'

[HarukiKozukapenguin]

Thank you for interesting challenge. I ran python.run_vision_ppo with the folloing command, but the command says there are no module named flightrl

$ python3 -m python.run_vision_ppo --render 0 --train 1
Traceback (most recent call last):
  File "/home/myworkspace/anaconda3/envs/agileflight/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/hamyworkspaceu/anaconda3/envs/agileflight/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/myworkspace/icra22_competition_ws/src/agile_flight/envtest/python/run_vision_ppo.py", line 14, in <module>
    from rpg_baselines.torch.common.ppo import PPO
  File "/home/myworkspace/anaconda3/envs/agileflight/lib/python3.8/site-packages/rpg_baselines/torch/common/ppo.py", line 21, in <module>
    from flightrl.rpg_baselines.torch.common.on_policy_algorithm import \
ModuleNotFoundError: No module named 'flightrl'

I did the following things.(cf. https://github.com/uzh-rpg/agile_flight/blob/main/envtest/python/README.md)

• Run ./setup_py.bashwith conda environment.
• Checked to run well the $ python3 -m python.run_vision_demo --render 1

I have several bugs when run ./setup_py.bash , and I cured these by myself. If these cause some problem, prease tell me

A. ModuleNotFoundError: No module named 'rpg_baselines.torch' Based on this issue, I changed as follows lightmare/flightpy/flightrl/setup.py from packages=['rpg_baselines'], to packages=find_packages() https://github.com/uzh-rpg/agile_flight/issues/5#issuecomment-1072016802

[tongtybj]

@HarukiKozukapenguin

I got the same error with you. The reason is that the package of rpg_baselines is installed without the upper prefix of flightrl (Please see https://github.com/uzh-rpg/flightmare/blob/master/flightrl/setup.py).

However, https://github.com/uzh-rpg/flightmare/blob/092ff357139b2e98fc92bcdee50f38f85b55246d/flightpy/flightrl/rpg_baselines/torch/common/ppo.py#L21-L23 uses a prefix of flightrl.

A simple workaround is to change https://github.com/uzh-rpg/flightmare/blob/092ff357139b2e98fc92bcdee50f38f85b55246d/flightpy/flightrl/rpg_baselines/torch/common/ppo.py#L21-L23 as follows:

from rpg_baselines.torch.common.on_policy_algorithm import \
    OnPolicyAlgorithm
from rpg_baselines.torch.common.util import plot3d_traj, traj_rollout

and redo https://github.com/uzh-rpg/agile_flight/blob/main/setup_py.bash#L64-L66 in your conda enviroment.

[tongtybj]

@yun-long

What is the purpose to add flightrl in https://github.com/uzh-rpg/flightmare/blob/092ff357139b2e98fc92bcdee50f38f85b55246d/flightpy/flightrl/rpg_baselines/torch/common/ppo.py#L21-L23?

This breaks the consistence with your rule described in https://github.com/uzh-rpg/flightmare/blob/092ff357139b2e98fc92bcdee50f38f85b55246d/flightpy/flightrl/setup.py#L19

[yun-long]

hi @tongtybj

thanks a lot for helping to address the issues.

You are right. there should be no flightrl in the ppo.py

[HarukiKozukapenguin]

@tongtybj Thank you so much. I fixed, and it works well.