如何解决Ray中的错误:“ ModuleNotFoundError:没有名为'pandas'的模块”
我在名为p_c的环境中的终端上启动ray,该环境中安装了pandas命令 ray start --head --num-cpus = 2 --num-gpus = 0
然后,我运行了以下python脚本:
import ray
import os
import pandas as pd
import sys
ray.init(address='auto',redis_password='5241590000000000')
@ray.remote
def foo():
import pandas as pd
print("This runs on the VM")
print(os.getcwd())
print(sys.path)
data = pd.read_csv('/Documents/sample.data')
return 1
print("This runs locally")
print(ray.get(foo.remote()))
运行此命令会引发以下错误:
WARNING: Logging before InitGoogleLogging() is written to STDERR
I1014 13:56:23.410329 16563 16563 global_state_accessor.cc:25] Redis server address = 192.168.29.24:6379,is test flag = 0
I1014 13:56:23.411886 16563 16563 redis_client.cc:146] RedisClient connected.
I1014 13:56:23.421353 16563 16563 redis_gcs_client.cc:89] RedisGcsClient Connected.
I1014 13:56:23.423465 16563 16563 service_based_gcs_client.cc:193] Reconnected to GCS server: 192.168.29.24:37125
I1014 13:56:23.424247 16563 16563 service_based_accessor.cc:92] Reestablishing subscription for job info.
I1014 13:56:23.424291 16563 16563 service_based_accessor.cc:422] Reestablishing subscription for actor info.
I1014 13:56:23.424387 16563 16563 service_based_accessor.cc:797] Reestablishing subscription for node info.
I1014 13:56:23.424415 16563 16563 service_based_accessor.cc:1073] Reestablishing subscription for task info.
I1014 13:56:23.424441 16563 16563 service_based_accessor.cc:1248] Reestablishing subscription for object locations.
I1014 13:56:23.424466 16563 16563 service_based_accessor.cc:1368] Reestablishing subscription for worker failures.
I1014 13:56:23.424504 16563 16563 service_based_gcs_client.cc:86] ServiceBasedGcsClient Connected.
This runs locally
Traceback (most recent call last):
File "hello1.py",line 26,in <module>
print(ray.get(foo.remote()))
File "/home/jatin/.local/lib/python3.8/site-packages/ray/worker.py",line 1538,in get
raise value.as_instanceof_cause()
ray.exceptions.RayTaskError(ModuleNotFoundError): ray::__main__.foo() (pid=16182,ip=192.168.29.24)
File "python/ray/_raylet.pyx",line 479,in ray._raylet.execute_task
File "hello1.py",line 17,in foo
import pandas as pd
ModuleNotFoundError: No module named 'pandas'
我在所有可能的路径上都安装了熊猫。我不明白工人到底在哪里找不到熊猫模块。 没有熊猫导入,代码运行良好。
解决方法
Ray 运行时将在配置的虚拟环境中寻找 Pandas。如果在本地启动 Ray,请确保在为 Ray 运行时提供服务的虚拟环境中安装所需的 Python 库。
例如
. .venv/bin/activate
pip install pandas
ray start --num-cpus=8 --object-store-memory=7000000000 --head
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