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What's the behind magic of python os.path.realpath?

Recently, I tried to install pypoetry on my windows. The python I used was installed from MS store. And I found something strange.
C:\Users\Liu.D.H>where python
C:\Users\Liu.D.H\AppData\Local\Microsoft\WindowsApps\python.exe
C:\Users\Liu.D.H\anaconda3\python.exe
C:\Users\Liu.D.H>C:\Users\Liu.D.H\anaconda3\python.exe
Python 3.8.8 (default, Apr 13 2021, 15:08:03) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Warning:
This Python interpreter is in a conda environment, but the environment has
not been activated. Libraries may fail to load. To activate this environment
please see https://conda.io/activation
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.path.realpath("C:/Users/Liu.D.H/AppData/Roaming/pypoetry")
'C:\\Users\\Liu.D.H\\AppData\\Roaming\\pypoetry'
>>> exit()
C:\Users\Liu.D.H>python
Python 3.10.1 (tags/v3.10.1:2cd268a, Dec 6 2021, 19:10:37) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.path.realpath("C:/Users/Liu.D.H/AppData/Roaming/pypoetry")
'C:\\Users\\Liu.D.H\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\\LocalCache\\Roaming\\pypoetry'
>>> exit()
C:\Users\Liu.D.H>
I also tried the realpath of node.
C:\Users\Liu.D.H>node
Welcome to Node.js v14.18.1.
Type ".help" for more information.
> fs.realpathSync("C:/Users/Liu.D.H/AppData/Roaming/pypoetry")
Uncaught:
Error: ENOENT: no such file or directory, lstat 'C:\Users\Liu.D.H\AppData\Roaming\pypoetry'
at Object.realpathSync (fs.js:1800:7) {
errno: -4058,
syscall: 'lstat',
code: 'ENOENT',
path: 'C:\\Users\\Liu.D.H\\AppData\\Roaming\\pypoetry'
}
>
So, the %APPDATA%/sub_path location in windows is process-dependent?

Import package doesn't work in venv, when executing with python.exe

I'm installing package whl with pip in virtual enviorment.
PS C:\Users\Project> .\venv37\Scripts\activate
(venv37) PS C:\Users\Project> pip install .\vtk-9.0.1-cp37-cp37m-win_amd64.whl
Processing c:\users\project\vtk-9.0.1-cp37-cp37m-win_amd64.whl
Installing collected packages: vtk
Successfully installed vtk-9.0.1
and import works.
(venv37) PS C:\Users\Project> python
Python 3.7.4 (default, Aug 9 2019, 18:34:13) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Warning:
This Python interpreter is in a conda environment, but the environment has
not been activated. Libraries may fail to load. To activate this environment
please see https://conda.io/activation
Type "help", "copyright", "credits" or "license" for more information.
>>> import vtk
>>> exit()
(venv37) PS C:\Users\Project> deactivate
Now I try to execute it from Python Interpreter in venv.
PS C:\Users\Project> .\venv37\Scripts\activate
(venv37) PS C:\Users\Project> .\venv37\Scripts\python.exe
Python 3.7.8 (tags/v3.7.8:4b47a5b6ba, Jun 28 2020, 08:53:46) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import vtk
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'vtk'
>>>
And it doesn't work. What is my mistake?

Running “import tensorflow” on Mac generates "No module named tensorflow" error

Actually I already installed tensorflow by using
$ pip install tensorflow
and it works well when I use
$ python
Python 2.7.15 (default, Jul 23 2018, 21:27:06)
[GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>import tensorflow
>>>
but when I use python3 on command line
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'tensorflow'
>>>
it shows an error, and it shows the same error when I use IDLE

use
pip3 install tensorflow
pip installs to default python directory. pip3 installs to python3

Running specific python interpreters form command line

When I open CMD (on windows 10) and enter python it initializes python 3.6.0
C:\>python
Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 08:06:12) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
Now I recently also installed 2.7.6 the interpreter. How can I call both version of Python from CMD?
desired outcome
C:\>python
Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 08:06:12) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> ^Z
C:\>python2.6
Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

You can use Python launcher for Windows:
Python 2.7 interptreter:
C:\> py -2.7
Python 3.6 interpreter:
C:\> py -3.6
You also can run a script with a specific interpreter:
C:\> py -2.7 myScript.py

If its windows machine, to open a specific version of python you can use py from the command line.
example:
py2.7 #for version 2.7
and
py3.6 #for version 3.6
if its a Linux machine you can use the following commands in the command line python
python2.7 #opens version 2.7
and
python3.6 #opens version 3.6

If I change the folder, why is the "ModuleNotFouldError" happened?

My environment is Windows10, and I installed python3.6, tensorflow, and anaconda.
There is no error in the installation.
If I run the "command prompt" (not use anaconda), I can success to run tensorflow.
However, if I use anaconda, a problem is coming.
1st: If I run anaconda prompt and import tensorflow by python, no problem.
2nd: If I change the folder and import tensorflow, the error message "ModuleNotFouldError" is coming.
Why I change the path, I cannot import a module?
History is below.
(c:\Users\**Username**\Anaconda3) c:\Users\**Username**\>python
Python 3.6.0 |Anaconda 4.3.0 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits", or "license" for more information
>>>import tensorflow
>>>exit()
(c:\Users\**Username**\Anaconda3) c:\Users\**Username**\>cd workspace
(c:\Users\**Username**\Anaconda3) c:\Users\**Username**\workspace>python
Python 3.6.0 |Anaconda 4.3.0 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC 1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits", or "license" for more information
>>>import tensorflow
Trackback (most recent call last):
File "", line 1, in
ModuleNotFoundError: No module named 'tensorflow'