代码收藏家 解决Jupyter Notebook启动失败报错：“No module named ‘psutil._psutil_windows‘”
记录一个Jupyter Notebook启动时的报错
环境
win10 默认装的环境py3.9 32bit的，jupyter book安装在conda建立的虚拟环境py3.9(64bit)中
问题1
jupyter notebook 启动kernel一直显示reconnecting最后failed
每次启动时报错：ModuleNotFoundError: No module named 'psutil._psutil_windows'
Traceback (most recent call last):
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
from ipykernel import kernelapp as app
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\kernelapp.py", line 51, in <module>
from .ipkernel import IPythonKernel
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\ipkernel.py", line 19, in <module>
from .comm.comm import BaseComm
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\comm\__init__.py", line 3, in <module>
from .comm import Comm
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\comm\comm.py", line 14, in <module>
from ipykernel.kernelbase import Kernel
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\kernelbase.py", line 35, in <module>
import psutil
File "C:\Users\meij1\AppData\Roaming\Python\Python39\site-packages\psutil\__init__.py", line 109, in <module>
from . import _pswindows as _psplatform
File "C:\Users\meij1\AppData\Roaming\Python\Python39\site-packages\psutil\_pswindows.py", line 35, in <module>
from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS
ModuleNotFoundError: No module named 'psutil._psutil_windows'
根据信息发现是虚拟环境py3.9在导入psutil的时候是从外部本机环境的py39中导入的，结果发现这个环境中没有psutil这个module.
在base环境中使用pip重新安装psutil后重新尝试：
问题2
重新run了一遍报错换成了ImportError: DLL load failed while importing _psutil_windows: %1 is not a valid Win32 application：看起来是32位的程序跑在了64位系统上。
Traceback (most recent call last):
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
from ipykernel import kernelapp as app
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\kernelapp.py", line 51, in <module>
from .ipkernel import IPythonKernel
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\ipkernel.py", line 19, in <module>
from .comm.comm import BaseComm
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\comm\__init__.py", line 3, in <module>
from .comm import Comm
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\comm\comm.py", line 14, in <module>
from ipykernel.kernelbase import Kernel
File "C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9\lib\site-packages\ipykernel\kernelbase.py", line 35, in <module>
import psutil
File "C:\Users\meij1\AppData\Roaming\Python\Python39\site-packages\psutil\__init__.py", line 109, in <module>
from . import _pswindows as _psplatform
File "C:\Users\meij1\AppData\Roaming\Python\Python39\site-packages\psutil\_pswindows.py", line 35, in <module>
from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS
ImportError: DLL load failed while importing _psutil_windows: %1 is not a valid Win32 application.
研究了一下，发现问题处在这个本机环境干扰了我的py3.9虚拟环境， 本机环境装的psutil是32bit,
但是虚拟环境py3.9默认设置的是64bit 平台,看下面的platform:win-64
(py3.9) C:\Users\meij1\Videos>conda info
active environment : py3.9
active env location : C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs\py3.9
shell level : 2
user config file : C:\Users\meij1\.condarc
populated config files : C:\Users\meij1\.condarc
conda version : 4.12.0
conda-build version : not installed
python version : 3.9.7.final.0
virtual packages : __win=0=0
__archspec=1=x86_64
base environment : C:\Users\meij1\3D Objects\Anarchy\Miniconda3 (writable)
conda av data dir : C:\Users\meij1\3D Objects\Anarchy\Miniconda3\etc\conda
conda av metadata url : None
channel URLs : https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
package cache : C:\Users\meij1\3D Objects\Anarchy\Miniconda3\pkgs
C:\Users\meij1\.conda\pkgs
C:\Users\meij1\AppData\Local\conda\conda\pkgs
envs directories : C:\Users\meij1\3D Objects\Anarchy\Miniconda3\envs
C:\Users\meij1\.conda\envs
C:\Users\meij1\AppData\Local\conda\conda\envs
**platform : win-64**
user-agent : conda/4.12.0 requests/2.27.1 CPython/3.9.7 Windows/10 Windows/10.0.19042
administrator : False
netrc file : None
offline mode : False
应该是两个环境的存在弄混了psutil,将本机的32bit pstuil卸载后，py3.6的psutil重新安装就没问题了。
问题解决
kernel 启动正常
[I 22:47:29.154 NotebookApp] Kernel started: 37ce7359-26a5-4911-acbe-6ae21e40bce3, name: python3
[I 22:49:29.675 NotebookApp] Saving file at /Jupyter Notebook/Untitled.ipynb
马后炮
- 根据报错信息分析具体哪个环境的问题base/py3.9…
- 建议装了minicoda/Anaconda之后本机的python环境可以删掉了，避免一些奇怪问题。
- 如何修改conda的平台信息。
conda config --env --set subdir win-32 # windows下
conda config --env --set subdir linux-32 # linux下
