Why I can't find module "metadrive.constants"?

[RuiqiZhang99]

Hello, Mr. Peng,
I run your official code with gym==0.19.0 and ray==0.22.0, and download metadrive with "git clone" commend.

However, there is an error:

Successfully registered the following environments: ['MetaDrive-validation-v0', 'MetaDrive-10env-v0', 'MetaDrive-100envs-v0', 'MetaDrive-1000envs-v0', 'SafeMetaDrive-validation-v0', 'SafeMetaDrive-10env-v0', 'SafeMetaDrive-100envs-v0', 'SafeMetaDrive-1000envs-v0', 'MARLTollgate-v0', 'MARLBottleneck-v0', 'MARLRoundabout-v0', 'MARLIntersection-v0', 'MARLParkingLot-v0', 'MARLMetaDrive-v0'].
Successfully initialize Ray!
Available resources:  {'object_store_memory': 8912057548.0, 'accelerator_type:G': 1.0, 'memory': 17824115099.0, 'node:192.168.1.104': 1.0, 'CPU': 96.0}
== Status ==
Current time: 2023-03-10 23:34:46 (running for 00:00:00.41)
Memory usage on this node: 9.2/31.0 GiB 
Using FIFO scheduling algorithm.
Resources requested: 1.9999999999999998/96 CPUs, 0/0 GPUs, 0.0/16.6 GiB heap, 0.0/8.3 GiB objects (0.0/1.0 accelerator_type:G)
Result logdir: /home/ps/Documents/Projects/CoPO/TEST
Number of trials: 5/5 (4 PENDING, 1 RUNNING)
+---------------------------------------------------+----------+-------+----------------------+--------+-----------------+
| Trial name                                        | status   | loc   | env                  |   seed |   vf_clip_param |
|---------------------------------------------------+----------+-------+----------------------+--------+-----------------|
| IPPOTrainer_MultiAgentIntersectionEnv_15c85_00000 | RUNNING  |       | MultiAgentInter_50d0 |      0 |              10 |
| IPPOTrainer_MultiAgentIntersectionEnv_15c85_00001 | PENDING  |       | MultiAgentInter_50d0 |      0 |              20 |
| IPPOTrainer_MultiAgentIntersectionEnv_15c85_00002 | PENDING  |       | MultiAgentInter_50d0 |      0 |              50 |
| IPPOTrainer_MultiAgentIntersectionEnv_15c85_00003 | PENDING  |       | MultiAgentInter_50d0 |      0 |             100 |
| IPPOTrainer_MultiAgentIntersectionEnv_15c85_00004 | PENDING  |       | MultiAgentInter_50d0 |      0 |            1000 |
+---------------------------------------------------+----------+-------+----------------------+--------+-----------------+


2023-03-10 23:34:50,656 ERROR trial_runner.py:1088 -- Trial IPPOTrainer_MultiAgentIntersectionEnv_15c85_00000: Error processing event.
ray.tune.error._TuneNoNextExecutorEventError: Traceback (most recent call last):
  File "/home/ps/miniconda3/envs/copo/lib/python3.7/site-packages/ray/tune/execution/ray_trial_executor.py", line 1070, in get_next_executor_event
    future_result = ray.get(ready_future)
  File "/home/ps/miniconda3/envs/copo/lib/python3.7/site-packages/ray/_private/client_mode_hook.py", line 105, in wrapper
    return func(*args, **kwargs)
  File "/home/ps/miniconda3/envs/copo/lib/python3.7/site-packages/ray/_private/worker.py", line 2311, in get
    raise value
ray.exceptions.RayActorError: The actor died because of an error raised in its creation task, ray::IPPOTrainer.__init__() (pid=12557, ip=192.168.1.104, repr=IPPOTrainer)
  File "/home/ps/miniconda3/envs/copo/lib/python3.7/site-packages/ray/rllib/algorithms/algorithm.py", line 368, in __init__
    config.validate()
  File "/home/ps/Documents/Projects/CoPO/copo_code/copo/torch_copo/algo_ippo.py", line 50, in validate
    from metadrive.constants import DEFAULT_AGENT
ModuleNotFoundError: No module named 'metadrive.constants'

Hope you can help me to solve this issue, sincerely thanks :)

[pengzhenghao]

Do you install metadrive via

pip install -e .

?

[RuiqiZhang99]

Do you install metadrive via

pip install -e .

?

Thanks for your respond. It is a stupid bug generated from IDE workspace.
Just fixed it by opening the code dir "./copo/copo_code/copo" rather than "./copo"

[pengzhenghao]

Oh that's quite common. Happy to see you fix it.