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how to install Pip3 on windows 10?

I installed Python 3.10 today but when I try to run pip or pip3, the command prompt gives me an error. I tried following the instructions that the top answer in this question said. My complete path to the python interpreter is this:
C:\Users\User\AppData\Local\Microsoft\WindowsApps\python3.exe
In the WindowsApps directory, I'm supposed to have a Scripts folder. Strangely enough, I don't. Can someone please help me?

Check if pip3 is already installed
pip3 -v
if it is installed the output should be like that
C:\Python38\python.exe -m pip <command> [options]
Commands:
install Install packages.
download Download packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
...
...
Pip3 Upgrade
python -m pip3 install --upgrade pip
Pip3 Downgrade
python -m pip3 install pip==19.0

You can try python -m pip to use pip if it is installed.
If pip is not installed, you can always use python -m ensurepip --upgrade to install pip for your python installation.

Take a look at the following post
How can I install pip on Windows?
py -3 -m ensurepip

Python not using proper pip

I'm running CentOS 8 that came with native Python 3.6.8. I needed Python 3.7 so I installed Python 3.7.0 from sources. Now, python command is unknown to the system, while commands python3 and python3.7 both use Python 3.7.
All good until now, but I can't seem to get pip working.
Command pip returns command not found, while python3 -m pip, python3.7 -m pip, python3 -m pip3, and python3.7 -m pip3 return No module named pip. Only pip command that works is pip3.
Now whatever package I install via pip3 does not seem to install properly. Example given, pip3 install tornado returns Requirement already satisfied, but when I try to import tornado in Python 3.7 I get ModuleNotFoundError: No module named 'tornado'. Not the same thing can be said when I try to import it in Python 3.6, which works flawlessly. From this, I understand that my pip only works with Python 3.6, and not with 3.7.
Please tell me how can I use pip with Python 3.7, thank you.

It looks like your python3.7 does not have pip.
Install pip for your specific python by running python3.7 -m easy_install pip.
Then, install packages by python3.7 -m pip install <package_name>
Another option is to create a virtual environment from your python3.7. The venv brings pip into it by default.
You create venv by python3.7 -m venv <venv_name>

I think the packages you install will be installed for the previous version of Python. I think you should update the native OS Python like this:
Install the python3.7 package using apt-get
sudo apt-get install python 3.7
Add python3.6 & python3.7 to update-alternatives:
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 2
Update python3 to point to Python 3.7:
`sudo update-alternatives --config python3
Test the version:
python3 -V

Pip for python2 while python3 pip exists

I have both python2 and python3 in my system. But when I try :
python -m pip install sklearn
bash shows :
/usr/bin/python: No module named pip
And
pip --version
Yields :
pip 20.0.2 from /usr/lib/python3/dist-packages/pip (python 3.8)
Python versions are Python 2.7.18 and Python 3.8.2.
How to correct this error by having two pip versions?
This is a similar question, but did not solve the issue.
OS is Ubuntu.

Thanks to HK boy
The following works, it installs pip explicitly for the python version specified :
curl -O https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
I already had pip3 before hand, so to install packages for python3, pip3 install <package> is enough.

pip and pip3 - both pointing to python3.5?

I started to experiment with shade today; and installed it for both python2 and python3 on my ubuntu 16.04 system; using:
sudo pip install shade
respectively
sudo pip3 install shade
Both commands passed; I didn't really pay attention.
Then I tried to run this little test script:
from shade import *
simple_logging(debug=True)
conn = openstack_cloud(cloud='myopenstack')
images = conn.list_images()
for image in images:
print(image)
Using python3, I got a certificate error (which is fine, I would be rather surprised to find our internal infrastructure to use correct certificates).
But just to be sure, I wanted to run with python2.7, too; and I am told:
ImportError: No module named shade
So, I had a closer look what pip and pip3 have to say:
> pip -V
pip 9.0.1 from /usr/local/lib/python3.5/dist-packages (python 3.5)
> pip3 -V
pip 9.0.1 from /usr/local/lib/python3.5/dist-packages (python 3.5)
It looks like both pip and pip3 are actually working on my python3 installation, but when I do:
> python --version
Python 2.7.12
> python3 --version
Python 3.5.2
Any idea, anybody? What could be causing this, or how to actually install shade for python2/pip?
As requested:
> for i in pip pip3 python python3 ; do type $i ; done
pip is /usr/local/bin/pip
pip3 is /usr/local/bin/pip3
python is /usr/bin/python
python3 is /usr/bin/python3

pip3 looks like the default option pip uses. Try using pip2 instead to explicitly install a Python 2 package.

Just change the first line of the /usr/local/bin/pip to:
#!/usr/bin/python
and the first line of /usr/local/bin/pip3 to:
#!/usr/bin/python3
And then it will act normally:
> pip -V
pip 9.0.1 from /usr/local/lib/python2.7/dist-packages (python 2.7)
> pip3 -V
pip 9.0.1 from /usr/local/lib/python3.5/dist-packages (python 3.5)

python -m pip
This will use the version of pip that python can see.

Your local install of python3's pip in /usr/local/bin/ shadows the system install of pip in /usr/bin. In order to use the system's default pip, you can:
Specify the path explicitly: sudo /usr/bin/pip install shade
Delete the local install of pip: sudo rm /usr/local/bin/pip
Change your $PATH to prefer /usr/bin to /usr/local/bin
Use the pip2 alias from /usr/bin: sudo pip2 install shade
Install python3 from the system repositories: sudo apt-get install python3. Don't forget to delete your local python3 install if you go this route.

I ran into this problem (where pip got associated with Python 3) and it's due to the pip installer updating pip to point to Python 3. I think this is very confusing behavior because historically everyone has associated pip with Python 2 and pip3 with Python 3. We got around this by doing the following:
# install pip
curl https://bootstrap.pypa.io/get-pip.py -o /tmp/get-pip.py
sudo python3 /tmp/get-pip.py
sudo python /tmp/get-pip.py # install the python2 version last so the pip binary is not overwritten with the python3 version
rm /tmp/get-pip.py
The key here is installing the Python 2 pip after installing the Python 3 pip.

how to use python2.7 pip instead of default pip

I just installed python 2.7 and also pip to the 2.7 site package.
When I get the version with:
pip -V
It shows:
pip 1.3.1 from /usr/lib/python2.6/site-packages (python 2.6)
How do I use the 2.7 version of pip located at:
/usr/local/lib/python2.7/site-packages

There should be a binary called "pip2.7" installed at some location included within your $PATH variable.
You can find that out by typing
which pip2.7
This should print something like '/usr/local/bin/pip2.7' to your stdout. If it does not print anything like this, it is not installed. In that case, install it by running
$ wget https://bootstrap.pypa.io/pip/2.7/get-pip.py
$ sudo python2.7 get-pip.py
Now, you should be all set, and
which pip2.7
should return the correct output.

An alternative is to call the pip module by using python2.7, as below:
python2.7 -m pip <commands>
For example, you could run python2.7 -m pip install <package> to install your favorite python modules. Here is a reference: https://stackoverflow.com/a/50017310/4256346.
In case the pip module has not yet been installed for this version of python, you can run the following:
python2.7 -m ensurepip
Running this command will "bootstrap the pip installer". Note that running this may require administrative privileges (i.e. sudo). Here is a reference: https://docs.python.org/2.7/library/ensurepip.html and another reference https://stackoverflow.com/a/46631019/4256346.

as noted here, this is what worked best for me:
sudo apt-get install python3 python3-pip python3-setuptools
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10

pip has now dropped support for python2, therefore you can't use python2 pip
You can't find python2-pip in apt-get anymore, and you won't get pip when installing python2 from source
You can still install python modules using apt-get. To install a python prepend ‘python-’ to the module name
apt-get install python-six # install six