[Python] Install python3.5 + PIP in Ubuntu environment

In general, the PPA is added first, but I get an error when I add the PPA:

sudo add-apt-repository ppa:fkrull/deadsnakes

Ubuntu Add-apt-repository:command not found

So let's do it first:

sudo Install python-software-propertiessudoinstall Software-properties-common

After:

sudo add-apt-repository ppa:fkrull/deadsnakessudo apt-get updatesudo Install Python3. 5 sudo CP /usr/bin/python/usr/bin/python_baksudorm /usr/bin/python sudo Ln -s/usr/bin/python3. 5 /usr/bin/python

Again

Python--version

You can do it.

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As for the PIP, and then search the internet for half a day installation PIP3:

sudo Install Python3-pip

Are not successful, has been an error:

E:sub-process/usr/bin/dpkg returned an error code (1)

It's still not possible to try out a variety of other ways to solve this error:

sudo MV/var/lib/dpkg/Info/var/lib/dpkg/Info. bak//the Info folder is now renamedsudo mkdir/var/lib/dpkg/Info //Create a new info foldersudoapt-Get Updateapt-get-fInstallXXXsudo MV/var/lib/dpkg/Info/*/var/lib/dpkg/info.baksudo rm-rf/var/lib/dpkg/info//delete your new info folder by removing sudo mv/var/lib/dpkg/info.bak/var/lib/ Dpkg/info//Change the previous Info folder back to its name

sudo apt-get update--fix-missingsudo sudo sudoinstall -F

The third kind I didn't try:

 for  in/usr/share/fonts/x11/*  /usr/share/fonts/truetype/*do sudo touch "$i" done

To install using a Python script:

wget https://bootstrap.pypa.io/get-pip.py  sudo python3 get-pip.py   sudo Install setuptools--upgrade  sudoinstall Ipython[all]  

Still have an error, when executing the script error.

Then I try to use it directly:

InstallInstall jinja2

have been successful.

Continue looking at the Python version again:

Pip--version

I'm really not sure what I'm going to get back:

1.5. 4 3.5)

This makes me feel as if the pip I'm using now is python3.5 's PIP.

Does that mean python3.5 comes with it?

Then I went into the/usr/lib/directory and found that there are several files about Python:

Python2. 7 Python3python3. 4 Python3. 5

2.7 and 3.4 are self-bringing, and 3.5 should be the one I installed.

There is only one directory inside the Python3:

Dist-packages

There are indeed Pip folders inside.

There are many directories and folders in the other directory.

[Python] Install python3.5 + PIP in Ubuntu environment