Install Python3.7.2

Install Phthon3.7.2 and make symlink to /usr/bin/.

Install dependence

$ sudo apt update
$ sudo apt install build-essential python-dev python-setuptools python-pip python-smbus build-essential libncursesw5-dev libgdbm-dev libc6-dev zlib1g-dev libsqlite3-dev tk-dev libssl-dev openssl libffi-dev

Download and install Python-3.7.2

$ wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
$ tar zxvf Python-3.7.2.tgz && cd Python-3.7.2
$ sudo ./configure --prefix=/usr/local/opt/python-3.7.2 --with-ssl
$ sudo make && sudo make install

注解

In the 3rd command, param --with--ssl is important, don’t miss it!

Backup python3.5 and pip3 symlink

$ sudo cp /usr/bin/python3 /usr/bin/python3.5
cp: '/usr/bin/python3' and '/usr/bin/python3.5' are the same file

$ sudo cp /usr/bin/pip3 /usr/bin/pip3.5

Make Symlinks

$ sudo ln -s /usr/local/opt/python-3.7.2/bin/python3.7 /usr/bin/python3.7
$ sudo ln -s /usr/local/opt/python-3.7.2/bin/python3.7 /usr/bin/python3
$ sudo ln -s /usr/local/opt/python-3.7.2/bin/python3.7 /usr/bin/py

$ sudo ln -s /usr/local/opt/python-3.7.2/bin/pip3.7 /usr/bin/pip3.7
$ sudo ln -s /usr/local/opt/python-3.7.2/bin/pip3.7 /usr/bin/pip3

$ sudo ln -s /usr/local/opt/python-3.7.2/bin/pydoc3.7 /usr/bin/pydoc3.7
$ sudo ln -s /usr/local/opt/python-3.7.2/bin/python3.7m /usr/bin/python3.7m
$ sudo ln -s /usr/local/opt/python-3.7.2/bin/pyvenv-3.7 /usr/bin/pyvenv-3.7

Rename lsb_release if there is a error

Try:

$ $ pip3 list
Package    Version
---------- -------
pip        10.0.1
setuptools 39.0.1
Traceback (most recent call last):
  File "/usr/bin/pip3", line 11, in <module>
    sys.exit(main())
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_internal/__init__.py", line 246, in main
    return command.main(cmd_args)
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_internal/basecommand.py", line 264, in main
    timeout=min(5, options.timeout)) as session:
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_internal/basecommand.py", line 81, in _build_session
    insecure_hosts=options.trusted_hosts,
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_internal/download.py", line 338, in __init__
    self.headers["User-Agent"] = user_agent()
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_internal/download.py", line 101, in user_agent
    zip(["name", "version", "id"], distro.linux_distribution()),
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 120, in linux_distribution
    return _distro.linux_distribution(full_distribution_name)
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 634, in linux_distribution
    self.version(),
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 688, in version
    self.lsb_release_attr('release'),
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 836, in lsb_release_attr
    return self._lsb_release_info.get(attribute, '')
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 522, in __get__
     ret = obj.__dict__[self._fname] = self._f(obj)
  File "/usr/local/opt/python-3.7.2/lib/python3.7/site-packages/pip/_vendor/distro.py", line 933, in _lsb_release_info
    stdout = subprocess.check_output(cmd, stderr=devnull)
  File "/usr/local/opt/python-3.7.2/lib/python3.7/subprocess.py", line 389, in check_output
    **kwargs).stdout
  File "/usr/local/opt/python-3.7.2/lib/python3.7/subprocess.py", line 481, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.

Rename it safely:

$ sudo mv /usr/bin/lsb_release /usr/bin/lsb_release_back

Then, try again:

$ pip3 list
Package    Version
---------- -------
pip        10.0.1
setuptools 39.0.1
You are using pip version 10.0.1, however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

Upgrade pip3

Do it:

$ pip3 install -U pip
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting pip
  Downloading https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl (1.3MB)
    100% |████████████████████████████████| 1.3MB 43kB/s
Installing collected packages: pip
  Found existing installation: pip 10.0.1
    Uninstalling pip-10.0.1:
      Successfully uninstalled pip-10.0.1
Successfully installed pip-18.1

Check it:

$ pip3 list
Package    Version
---------- -------
pip        18.1
setuptools 39.0.1

$

May update setuptools:

$ sudo pip3 install -U setuptools
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting setuptools
  Downloading https://files.pythonhosted.org/packages/37/06/754589caf971b0d2d48f151c2586f62902d93dc908e2fd9b9b9f6aa3c9dd/setuptools-40.6.3-py2.py3-none-any.whl (573kB)
    100% |████████████████████████████████| 573kB 20kB/s
Installing collected packages: setuptools
  Found existing installation: setuptools 39.0.1
    Uninstalling setuptools-39.0.1:
      Successfully uninstalled setuptools-39.0.1
Successfully installed setuptools-40.6.3

Python3 is ready now, well done!