Microsoft Windows [版本 10.0.17763.1577]
(c) 2018 Microsoft Corporation。保留所有權利。
首先：安裝virtualenv
pipinstallvirtualenv
pipinstallvirtualenvwrapper-win
然後：開始建立虛擬環境

1.檢視當著的python版本：
C:\Users\Administrator>python 
Python 3.9.0 (tags/v3.9.0:9cf6752, Oct  5 2020, 15:34:40) [MSC v.1927 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for
 
 more information.
>>> ^Z

2.切換到建立python虛擬環境的路徑：
C:\Users\Administrator>F:
F:\>cd F:\0_Work\4_python\python36venv
3.使用命令建立虛擬環境： virtualenv -p C:\Programs\Python\python36\python.exe venv36 (virtualenv -p + "python解析器在環境變更中的路徑" +  "python虛擬環境的名字")
F:\0_Work\4_python\python36venv>virtualenv -p C:\Programs\Python\python36\python.exe venv36
created virtual environment CPython3
 
.6.8.final.0-64 in 3209ms
  creator CPython3Windows(dest=F:\0_Work\4_python\python36venv\venv36, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=C:\Users\Administrator\AppData\Local\pypa\virtualenv)
    added seed packages: pip
 
==20.3.1, setuptools==51.0.0, wheel==0.36.1
  activators BashActivator,BatchActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
4.進入建立的虛擬環境：
F:\0_Work\4_python\python36venv>cd venv36

F:\0_Work\4_python\python36venv\venv36>dir
 驅動器 F 中的卷是 新加捲
 卷的序列號是 6E6C-5054

 F:\0_Work\4_python\python36venv\venv36 的目錄

2020/12/09  18:01    <DIR>          .
2020/12/09  18:01    <DIR>          ..
2020/12/09  18:01                42 .gitignore
2020/12/09  18:01    <DIR>          Lib
2020/12/09  18:01               300 pyvenv.cfg
2020/12/09  18:01    <DIR>          Scripts
               2 個檔案            342 位元組
               4 個目錄 265,085,833,216 可用位元組
5.使用新建立的虛擬環境：
F:\0_Work\4_python\python36venv\venv36>Scripts\activate.bat
6.檢視虛擬環境使用的python版本
(venv36) F:\0_Work\4_python\python36venv\venv36>python
Python 3.6.8 (tags/v3.6.8:3c6b436a57, Dec 24 2018, 00:16:47) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> ^Z

7.退出虛擬環境：
(venv36) F:\0_Work\4_python\python36venv\venv36>Scripts\deactivate.bat
F:\0_Work\4_python\python36venv\venv36>