[Python] ubuntu16.04 python3.8 (e: unable to locate package python3.8)

apt-get install python3.8 -> e: unable to locate package python3.8 오류 발생 시

(1) 라이브러리 설치

$ sudo apt-get update
$ sudo apt-get install build-essential checkinstall
$ sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev \
    libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev libffi-dev zlib1g-dev

 

(2) python 3.8 download

$ cd /opt
$ sudo wget https://www.python.org/ftp/python/3.8.19/Python-3.8.19.tgz
$ sudo tar xzf Python-3.8.19.tgz

 

(3) install

$ cd Python-3.8.19
$ sudo ./configure --enable-optimizations
$ sudo make altinstall

 

 

* 가상환경 (참고)

$ python3.8 -m venv venv