Ubuntu 16.04 Python3 설치

 

1. 소스 설치에 필요한 기본라이브러리

$ 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. 파이썬 다운 (최신버전인 3.10.1 기준)

$ cd /opt $ sudo wget https://www.python.org/ftp/python/3.10.1/Python-3.10.1.tgz $ sudo tar xzf Python-3.10.1.tgz

 

 

3. 컴파일

$ cd Python-3.10.1 $ sudo ./configure --enable-optimizations $ sudo make altinstall

 

 

4. 버젼확인

$ python3.10 -V Python 3.10.1

 

 

5. 디폴트 설정

update-alternatives --install /usr/bin/python python /usr/local/bin/python3.10 1

 

5-1 설정 확인

$ python -V Python 3.10.1

 

 

5-2. python 설정 경로를 못찾을 경우(whereis 명령어로 검색)

$ whereis python3 python3: /usr/bin/python3.5-config /usr/bin/python3.5m /usr/bin/python3 /usr/bin/python3.5 /usr/bin/python3.5m-config /usr/lib/python3 /usr/lib/python3.5 /etc/python3 /etc/python3.5 /usr/local/bin/python3.10-config /usr/local/bin/python3.8-config /usr/local/bin/python3.10 /usr/local/bin/python3.8 /usr/local/lib/python3.5 /usr/local/lib/python3.10 /usr/local/lib/python3.8 /usr/include/python3.5m /usr/include/python3.5 /usr/share/python3 /usr/share/man/man1/python3.1.gz

 

5-3. update-alternatives 버젼이 여러개라 설정이 안될 경우(파일 삭제 후 install 해도 버젼이 바뀌지 않을때)

$ sudo update-alternatives --config python 대체 항목 python에 대해 (/usr/bin/python 제공) 3개 선택이 있습니다.   선택       경로                     우선순� 상태 ------------------------------------------------------------   0            /usr/local/bin/python3.8    1         자동 모드   1            /usr/bin/python2.7          1         수동 모드   2            /usr/local/bin/python3.10   1         수동 모드 * 3            /usr/local/bin/python3.8    1         수동 모드 Press <enter> to keep the current choice[*], or type selection number: