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Why does my VS Code not recognize 'python' as an internal or external command

so I just considered using VS Code for writing python as i'm settling into programming. After following the full guide here: https://code.visualstudio.com/docs/python/python-tutorial and everything seemed ok.
But my code wont run, but runs well in my PyCharm but on VS Code it pops this error below:
"'python' is not recognized as an internal or external command,
operable program or batch file."
I have followed threads here advising reboot of computer and all but its not working for me, I would love to at least know what the problem is because my decision to use VSC is because i'd like to have one IDE that supports more languages so that write in one place or at least a few IDEs.
Any help will be appreciated.
Thanks in advance.

thanks, I've fixed it by uninstalling the existing python and reinstalling latest version, most importantly i realized i was adding a new path instead of editing the existing path. In recent windows clicking edit on the existing path will open a new dailog where you can then add a new path, that will be added to the existing path. Then I restarted my computer and then typed python --version at command prompt and there it was :) by the way this link (geek-university.com/python/add-python-to-the-windows-path) was most helpful but you have to do it as i described.

Reoccurring Python error that doesn't make much sense

I keep getting this error while working in a script:
'python' is not recognized as an internal or external command,
operable program or batch file.
Isn't this an error you'd see in terminal? I'm in Atom text editor. On top of that, it was working a few minutes ago (i.e. giving me errors about my actual code) and I've been working on it with no problem all day long.

Reinstall Python, and make sure you check the 'Add to Path' option.
You could also try adding Python to the path variable (Tutorial).

Downloading python 3 on windows

I am currently trying to figure out how to set up using python 3 on my machine (Windows 10 pro 64-bit), but I keep getting stuck.
I used the Python 3.6 downloader to install python, but whenever I try to use Command Prompt it keeps saying "'python' is not recognized as an internal or external command, operable program or batch file" as if I have not yet installed it.
Unlike answers to previous questions, I have already added ";C:\Python36" to my Path environment variable, so what am I doing wrong?
I am relatively new to python, but know how to use it on my Mac, so please let me know if I'm just fundamentally confused about something.

In environmental variables under path, add your python path... you said you already so please ensure is their comma separation between previous path..
And once added save environment variables tab. And close all command prompt then open it.
Then only command prompt will refresh with your python config..
Main thing, if you enter python which mean python 2.
For python3 type, python3 then it should work

Why are you using command prompt? I just use the python shell that comes with IDLE. It’s much simpler.
If you have to use command prompt for some reason, you’re problem is probably that you need to type in python3. Plain python is what you use for using Python 2 in the command prompt.

Thanks everyone, I ended up uninstalling and then re-downloading python, and selecting the button that says "add to environment variables." Previously, I typed the addition to Path myself, so I thought it might make a difference if I included it in the installation process instead. Then, I completely restarted my computer rather than just Command Prompt itself. I'm not sure which of these two things did it, but it works now!

running a python script as a command line variable

I am new to python and wanted to make a simple script that acted like the ls command in a mac/linux terminal but for cmd in windows. The code itself works and if I run the script using python ls_script.py in my cmd it works fine. However, I want to make it so that I can run it in any active directory by just typing in ls in my cmd. I made an environment variable in cmd called ls that has a value of python ....\ls_script.py, which assumed would work since if i were to type that exact thing in manually, it works. However, when I just type in ls, it gives the following error:
"'ls' is not recognized as an internal or external command, operable program, or batch file."

I don't think your problem has anything to do with python, considering that the python script does what you want. The problem is getting the environment variable to work, right?
I believe this question has the answer you're looking for:
How to create ls in windows command prompt?
In short, it looks to me like the way to achieve what you wanted was to not use environment variables, but to create a batch file instead.

Not being able to run pylint using windows (7) command prompt

I've just installed all the dependencies (asteroid and logilab-commons) and pylint, ran the tests for pylint and they all passed, but i just cant get pylint to work... i keep getting
'pylint' is not recognized as an internal or external command, operable program or batch file.
while running in the command prompt.
im not sure what im doing wrong and i cant seem to find any explanation anywhere

set PATH=%PATH%;C:\python27\scripts
is apparently what i needed to make it work... thanks for the path direction.