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Selenium and python : "Message: 'geckodriver' executable needs to be in PATH. "

I was recently working with web automation, with Selenium and python, and I faced into the error almost everyone got.
from selenium import webdriver
window = webdriver.Firefox()
window.get("https://ecoledirecte.com")
But I looked up for several answers, and None of them worked ! I tried the solution for this question, but nothing changed. I checked several times, and the geckodriver is in PATH (I extracted the file into my Downloads folder, then moved the executable into my main folder). I checked if indicating the mozilla geckovriver folder in the calling of webdriver.Firefox() would help (webdriver.Firefox("C:\\Users\\user\\Downloads\\mozilla-geckodriver-9b5f85c")), but no.
Is there any reason for that ?

I think I once put it in my System32 folder (which is in PATH!) but this is probably a little sketchy. Wherever you put the geckodriver, you just have to add that location to your PATH environment variable.
Try following this instruction:
http://www.learningaboutelectronics.com/Articles/How-to-install-geckodriver-Python-windows.php
I believe you could also install in the same folder where your python file is located - it should probably pick up that folder (but I'm not sure).

this is an easy solution:
webdriver.Firefox(executable_path='Your full path to the geckodriver executable'+'geckodriver')

For Python, why does Selenium not read Geckodriver yet read Chromedriver?

So basically, I added geckodriver.exe to the environment variables Path on Windows 10, yet trying
from selenium import webdriver
driver=webdriver.Firefox()
still resulted in the error message that "Geckodriver" executables need to be installed on Path
Now, I installed Chrome and the chromedriver.exe file off the web and ran chromedriver on Selenium just fine
from selenium import webdriver
browser=webdriver.Chrome(r'c:\chromedriver\chromedriver.exe')
This works and Google Chrome is open, so now I try to add the path in Firefox and when the path suggestions are showing up, selenium doesn't even recognize the geckodriver.exe exists, and pathlib does recognize the Path('c:/geckodriver/geckodriver.exe').exists()==True.
browser=webdriver.Firefox(r'c:\geckodriver\geckodriver.exe')
NotADirectoryError
So selenium is saying that the .exe file that clearly exists does not exist. How do I solve this problem?

For FireFox webdriver you'll need to set the path like this:
browser=webdriver.Firefox(executable_path=r'c:\geckodriver\geckodriver.exe')

Getting chrome driver not in path when moving my selenium executable to another computer

I wrote a small automation script using Python and Selenium Web Driver and I made it into an executable and the executable worked fine on my computer but when I tried it on another computer I got that chromedriver isn't in path (note: I included chromedriver using the add binary command and both computers are running the same operating system: Mac OS)
I am not quite sure why this happened, my suspicion is the following:
In my .py code I used the following two lines to initiate the chromedriver
path = "/Users/sergio/chromedriver"
driver = webdriver.Chrome(path)
However, the other computer doesn't even have this path so might be causing it even has this path. Now one might suggest simply using driver = webdriver.Chrome() but here comes the bigger problem: I tried having my chromedriver in a system path like /usr/local/bin and when I did that driver = webdriver.Chrome() worked but compiling the program using pyinstaller didn't work, I ran:
pyinstaller --onefile --noconsole --add-binary 'usr/local/bin/chromedriver:.' finalregtool.py
but I got a lot of errors including Unable to find "/Users/sergio/usr/local/bin/chromedriver" when adding binary and data files
This led to me thinking that pyinstaller automatically adds /Users/sergio to the given path which makes my path wrong so I had to use something inside /Users/sergio , I tried putting my chromedriver in Applications but compilation resulted in not finding the path again, for some reasons compilation worked when the path was /Users/sergio/chromedriver so I went with this path but the code didn't work anymore (chromedriver not found in path) so I had to specify the path manually.
Now I am kind of stuck in a deadlock not knowing what to do. Any help would be appreciated. I hope my explanation was clear enough.
My only end goal is compiling my selenium script and running it on other computers without having them install anything extra, I don't care how this should be done so if anyone has a solution outside pyinstaller I don't mind.
Update: added a bounty

There're couple of good solutions for that issue:
1.Install webdriver-manager package:
pip install webdriver-manager
what I prefer mostly and use it like:
from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager
driver = webdriver.Chrome(ChromeDriverManager().install())
2.Launch Remote Selenium Hub called Selenoid and lauch browser remotely:
driver = webdriver.Remote(command_executor='ip_of_your_selenoid_instance:4444/wd/hub',desired_capabilities=DesiredCapabilities.CHROME)
3.You can launch Chrome docker container and also going to by remote url, what will be always localhost:
driver = webdriver.Remote(command_executor='http://127.0.0.1:4444/wd/hub',desired_capabilities=DesiredCapabilities.CHROME)

You need to launch a standalone chrome browser:
docker run -d -p 4444:4444 selenium/standalone-chrome
and then in your python script launch browser using Remote webdriver:
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
driver = webdriver.Remote("http://127.0.0.1:4444/wd/hub", DesiredCapabilities.CHROME)
docker-compose:
# docker-compose.yml
selenium:
image: selenium/standalone-firefox
ports:
- 4444:4444

pyinstaller unpacks everything into a temporary directory during execution of exe, when using the --onefile mode. Refer to this answer and the related post to get an idea about how to get the correct relative path. You might have to use
path = resource_path("chromedriver")
Also, you can directly add the chromedriver to PATH environment variable in the runtime so you wouldn't have to specify the path explicitly and you can simply call webdriver.Chrome()
os.environ["PATH"] += os.pathsep + resource_path("chromedriver")
pyinstaller conciders usr/local/bin/chromedriver:. as a relative path, thus adds /Users/sergio in an attempt to make it absolute, try using a different location. This location doesn't matter anyway, once this file is found pyinstaller will add this to the root directory of the compiled exe, and unpack it when the exe is executed.

The modern way to deal with the chromedriver binary is to use WebDriverManager.
First you need to install the manager:
pip install webdriver-manager
Then you use it (for Chrome):
from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager
driver = webdriver.Chrome(ChromeDriverManager().install())
In my .NET Core project I use not the most modern approach I have described, but the latest stable NuGet from here https://www.nuget.org/packages/Selenium.WebDriver.ChromeDriver/.
Basically the nuget contains the chromedriver and copies it every time to your assembly folder (\bin\Debug\netcoreapp3.1 in my case). This is the line I have in my project:
"<PackageReference Include="Selenium.WebDriver.ChromeDriver" Version="*" />"
The star means the latest (highest number) stable package will be used as explained here. Of course you can install the latest version manually, and then on each 2 major Chrome versions to update the NuGet package reference so that is matches your Chrome version. (87 chromedriver works with 87 and 88 Chrome, but not with 89).
Then the driver is instantiated with this lines:
var driver = new ChromeDriver(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
References:
Error message: "'chromedriver' executable needs to be available in the path"
https://www.automatetheplanet.com/webdriver-net50/

path = "/Users/sergio/chromedriver"
driver = webdriver.Chrome(path)
Change the above code to the following format
driver = webdriver.Chrome(executable_path='C:/Users/sergio/chromedriver.exe')

python-selenium.common.exceptions.WebDriverException: Message: Unknown error

I'm up with python 3.8 and selenium but recently I downloaded the latest edge web driver zip file and runned the mswdedriver.exe from that and typed this code in my ide:
from selenium import webdriver
browser = webdriver.Edge('‪F:\za\python\Assistant\msedgedriver.exe')
browser.maximize_window()
browser.get(url='http://seleniumhq.org/')
but I see this error:
selenium.common.exceptions.WebDriverException: Message: 'MicrosoftEdgeDriver' executable needs to be
in PATH. Please download from http://go.microsoft.com/fwlink/?LinkId=619687
Can you help me friends?
Thanks in advance.

You need to give a path to the webdriver executable when you load a webdriver, or have it stored as an environment variable:
webdriver.Edge(executable_path="path/to/executable")
A web driver is essentially a special browser application, you must install that application before you can run anything with it.
Here's Edge's web driver download page. Or you can use the link from the error message http://go.microsoft.com/fwlink/?LinkId=619687
Here's a similar question Python Selenium Chrome Webdriver

The backslashes in the executable path need to be escaped, per Python syntax:
browser = webdriver.Edge('‪F:\\za\\python\\Assistant\\msedgedriver.exe')

This problem appears to me
you must put in "Bin Folder" the file "MicrosoftWebDriver.exe" as is , edit the previous name of edge webdriver to be "MicrosoftWebDriver.exe" and put it in the "Bin Folder"

You need to download the browser driver from here
After the download completes, extract the driver executable to your preferred location. Add the folder where the executable is located to your PATH environment variable.

why wont selenium module work properly for me

I installed the selenium module with pip installer. Then I tried to make the code to open firefox, then open a new tab to go to google.
Code:
from selenium import webdriver
driver = webdriver.Firefox()
driver.get("http://www.google.com")
The expected result should have opened firefox and then go to google.com.
But what actually happened was the program didn't produce any error, it just didn't open firefox, and the screen wasn't frozen either.

Download a matching version of Geckodriver and unpack the geckodriver.exe to the location where current user can execute programs from (normally it's any place inside your home folder)
Amend your code to include the location of the aforementioned geckodriver like:
driver = webdriver.Firefox(executable_path="/path/to/the/geckodriver/binary")
If this doesn't help - provide the path to the Firefox executable as well:
driver = webdriver.Firefox(executable_path="/path/to/the/geckodriver/binary", firefox_binary="/path/to/firefox/binary")
Instead of steps 2 and 3 you can add both firefox and geckodriver to your OS PATH
References:
Selenium with Python - Getting Started
Selenium With Python
Selenium using Python - Geckodriver executable needs to be in PATH