將Python虛擬環境新增到Jupyter Notebook中

目的：將利用conda自定義的python虛擬環境新增到jupyter notebook中

建立虛擬環境：conda create -n snp python=3.8.3，並切換到當前虛擬環境下conda activate snp。

安裝ipykernel包：conda install ipykernel

新增到Jupyter中：python -m ipykernel install --name snp #後面的環境名字需要更換

重啟Jupyter，即可看到新增的虛擬環境

新環境新增成功

切換環境，測試程式碼（一直顯示“服務正在啟動，請等待”）的字樣，檢視命令列發現問題ImportError: DLL load failed while importing error: 找不到指定的模組。進行解決。詳細的錯誤程式碼如下：

[I 21:59:57.053 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports

Traceback (most recent call last):

  File "D:\Software\Anaconda3\envs\snp\lib\runpy.py", line 194, in _run_module_as_main

    return _run_code(code, main_globals, None,

  File "D:\Software\Anaconda3\envs\snp\lib\runpy.py", line 87, in _run_code

    exec(code, run_globals)

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\ipykernel_launcher.py", line 15, in <module>

    from ipykernel import kernelapp as app

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\ipykernel\__init__.py", line 2, in <module>

    from .connect import *

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\ipykernel\connect.py", line 16, in <module>

    import jupyter_client

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>

    from .connect import *

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\jupyter_client\connect.py", line 21, in <module>

    import zmq

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\__init__.py", line 55, in <module>

    from zmq import backend

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>

    reraise(*exc_info)

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise

    raise value

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>

    _ns = select_backend(first)

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\backend\select.py", line 28, in select_backend

    mod = __import__(name, fromlist=public_api)

  File "D:\Software\Anaconda3\envs\snp\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>

    from . import (constants, error, message, context,

ImportError: DLL load failed while importing error: 找不到指定的模組。

原因：pyzmq版本不匹配問題，需要解除安裝舊的，在虛擬環境安裝新的版本

解決方法：在虛擬環境下pip uninstall pyzmq，然後pip install pyzmq

解除安裝重灌pyzmq

成功：虛擬環境新增成功。（雖然還是同樣的版本）