How do I install pip under windows and how do I see if the PIP has been successfully installed?

Recently learning Python, I found a lot of examples of installing and checking whether PIP is installed are older and less suitable for now (Python 3.6) So the next introductory level tutorial.

0: First How to install Python I will not do the introduction.

1: If you install the python3.4 version above, you do not need to reinstall. The official link is given here https://pip.pypa.io/en/stable/installing/

Then you only need to see if the following files, such as Pip.exe Pip3.6.exe Easy_installer.exe, are available in the Python python\scripts file that you installed.

If so, the PIP has already been brought in by the time that Python was installed.

Also, if you need to open the PIP directly through doc, you need to add the environment variable in.

2: Add the environment variable system attribute--environment variable--path--scripts path add it in.

You can now see how many third-party library files are installed through the PIP List command.

In addition, install the words
At the same time, many of the package does not fit under Windows. The Python package can be downloaded locally, the command line enters the folder (under the setup.py path), enter:
$ python setup.py Install

You can install a third-party library into Python.

How do I install pip under windows and how do I see if the PIP has been successfully installed?