ubuntu普通用户编译安装Python3教程
一、背景
众所周知，root用户在linux系统中拥有至高无上的权力，为所欲为，想干嘛就干嘛。所以当然不能随随便便给人家用root账户去搞事情啊，这里就有了用普通用户安装使用python的想法，一起来看看吧。
二、前期准备
更新下源，并安装相应的更新
sudo apt-get install upgrade && apt-get install update安装相关的编译辅助工具
sudo apt-get install make build-essential zlib1g-dev -y-y表示不用你确认了，告诉ubuntu你直接给我装完就行
源码包下载
认准这个网站哦，https://www.python.org/downloads/source/， 当然你再细心观察下，直接访问这里不是更快吗？https://www.python.org/ftp/python/
三、安装（以3.8.1为例）
下载相应的Python源码包，这里我们用wget一步到位
wget https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tgz对下载下来的Python源码包进行解压
tar -zxvf Python-3.8.1.tgz这里为了便于管理，我们在当前用户家目录下新建software表示我们要装的软件，一步到位我们就定义好安装python的目标文件夹了
mkdir -p /home/ataola/software/python3.8进入到解压后的源码目录进行编译安装
cd Python-3.8.1./configure --prefix="/home/ataola/software/python3.8"make && make install
追加到当前用户环境变量
# 打开文件vim ~/.bashrc# 视具体情况粘贴楼下这句话export PATH=PATH/software/python3.8/bin:$PATH# 保存退出 按RSC， 然后输入:wq# 更新使其生效source ~/.bashrc
验证一下吧
ataola@ataola-ubuntu:~$ python3 -VPython 3.8.1ataola@ataola-ubuntu:~$ pip3 -Vpip 19.2.3 from /home/ataola/software/python3.8/lib/python3.8/site-packages/pip (python 3.8)ataola@ataola-ubuntu:~$ python -VPython 3.8.1ataola@ataola-ubuntu:~$ pip -VCommand 'pip' not found, but can be installed with:apt install python3-pipPlease ask your administrator.ataola@ataola-ubuntu:~$
这里你会发现每次都要输入pip3，输入pip没用。你只需在环境变量加个别名就好
# 打开文件vim ~/.bashrc# 贴下面的话，视个人配置alias pip=/home/ataola/software/python3.8/bin/pip3.8# 保存退出 按RSC， 然后输入:wq# 更新使其生效source ~/.bashrc
这样不就好了嘛
ataola@ataola-ubuntu:~$ python -VPython 3.8.1ataola@ataola-ubuntu:~$ python3 -VPython 3.8.1ataola@ataola-ubuntu:~$ pip -Vpip 19.2.3 from /home/ataola/software/python3.8/lib/python3.8/site-packages/pip (python 3.8)ataola@ataola-ubuntu:~$ pip3 -Vpip 19.2.3 from /home/ataola/software/python3.8/lib/python3.8/site-packages/pip (python 3.8)ataola@ataola-ubuntu:~$
不高兴按楼上一步一步来，我这里贴了一份.bashrc，你直接看着改吧
# ~/.bashrc: executed by bash(1) for non-login shells.# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)# for examples# If not running interactively, don't do anything[ -z "$PS1" ] && return# don't put duplicate lines in the history. See bash(1) for more options# ... or force ignoredups and ignorespaceHISTCONTROL=ignoredups:ignorespace# append to the history file, don't overwrite itshopt -s histappend# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)HISTSIZE=1000HISTFILESIZE=10000# check the window size after each command and, if necessary,# update the values of LINES and COLUMNS.shopt -s checkwinsize# make less more friendly for non-text input files, see lesspipe(1)[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"# set variable identifying the chroot you work in (used in the prompt below)if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; thendebian_chroot=$(cat /etc/debian_chroot)fi# set a fancy prompt (non-color, unless we know we "want" color)case "$TERM" inxterm-color) color_prompt=yes;;esac# uncomment for a colored prompt, if the terminal has the capability; turned# off by default to not distract the user: the focus in a terminal window# should be on the output of commands, not on the prompt#force_color_prompt=yesif [ -n "$force_color_prompt" ]; thenif [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then# We have color support; assume it's compliant with Ecma-48# (ISO/IEC-6429). (Lack of such support is extremely rare, and such# a case would tend to support setf rather than setaf.)color_prompt=yeselsecolor_prompt=fifiif [ "$color_prompt" = yes ]; thenPS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ 'elsePS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ 'fiunset color_prompt force_color_prompt# If this is an xterm set the title to user@host:dircase "$TERM" inxterm*|rxvt*)PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1";;*);;esac# enable color support of ls and also add handy aliasesif [ -x /usr/bin/dircolors ]; thentest -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"alias ls='ls --color=auto'#alias dir='dir --color=auto'#alias vdir='vdir --color=auto'alias grep='grep --color=auto'alias fgrep='fgrep --color=auto'alias egrep='egrep --color=auto'fi# some more ls aliasesalias ll='ls -alF'alias la='ls -A'alias l='ls -CF'# Alias definitions.# You may want to put all your additions into a separate file like# ~/.bash_aliases, instead of adding them here directly.# See /usr/share/doc/bash-doc/examples in the bash-doc package.if [ -f ~/.bash_aliases ]; then. ~/.bash_aliasesfi# enable programmable completion features (you don't need to enable# this, if it's already enabled in /etc/bash.bashrc and /etc/profile# sources /etc/bash.bashrc).#if [ -f /etc/bash_completion ] && ! shopt -oq posix; then# . /etc/bash_completion#fi
搞完以后，这是国内环境啊，首先想到的是换源啊，不然每次都等个半死，时间都浪费了，阿里、豆瓣、清华源随便选一个吧。
# 升级pippip install --upgrade pip# 如果没有.pip文件创建，有就略过mkdir ~/.pip# 编辑配置文件vim ~/.pip/pip.conf
粘贴如下内容
[global]index-url=http://mirrors.aliyun.com/pypi/simple[install]trusted-host=mirrors.aliyun.com
注意这里是走http的，因为最开始编译的时候没有选--with-ssl， 当然你完全可以重新编译一次带上这个ssl./configure --prefix="/home/ataola/software/python3.8" --enable-optimizations --with-ssl， 后面就可以用https了
试一下安装速度，起飞
:~$ pip install wordcloudLooking in indexes: http://mirrors.aliyun.com/pypi/simpleCollecting wordcloudDownloading http://mirrors.aliyun.com/pypi/packages/50/5b/f588bbd1a7805a742e8d8316740383822b160c4e36b6c14793b57ebe7360/wordcloud-1.8.1-cp38-cp38-manylinux1_x86_64.whl (371 kB)371 kB 3.2 MB/sCollecting matplotlibDownloading http://mirrors.aliyun.com/pypi/packages/22/1c/d5e535b36c1de4eef4205656e76ac993c6d01b62cfdcac579edb63cd82e0/matplotlib-3.5.1-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.whl (11.3 MB)11.3 MB 129 kB/sRequirement already satisfied: numpy>=1.6.1 in ./software/python3.8/lib/python3.8/site-packages (from wordcloud) (1.21.4)Collecting pillowDownloading http://mirrors.aliyun.com/pypi/packages/fe/f9/cd8b11ec15e27581c5e7affdf04d618d44fa9524dbeb429e5e728df6dc4c/Pillow-8.4.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.1 MB)3.1 MB 47.9 MB/sRequirement already satisfied: python-dateutil>=2.7 in ./software/python3.8/lib/python3.8/site-packages (from matplotlib->wordcloud) (2.8.2)Collecting packaging>=20.0Downloading http://mirrors.aliyun.com/pypi/packages/05/8e/8de486cbd03baba4deef4142bd643a3e7bbe954a784dc1bb17142572d127/packaging-21.3-py3-none-any.whl (40 kB)40 kB 8.1 MB/sCollecting cycler>=0.10Downloading http://mirrors.aliyun.com/pypi/packages/5c/f9/695d6bedebd747e5eb0fe8fad57b72fdf25411273a39791cde838d5a8f51/cycler-0.11.0-py3-none-any.whl (6.4 kB)Collecting fonttools>=4.22.0Downloading http://mirrors.aliyun.com/pypi/packages/7d/05/5c446faf632f1a9c386bd9a56555cbcbe6c71e6b523025a4fbde396e9d39/fonttools-4.28.3-py3-none-any.whl (884 kB)884 kB 50.6 MB/sCollecting kiwisolver>=1.0.1Downloading http://mirrors.aliyun.com/pypi/packages/d0/2c/c3cba6c1ec54c82bfc56204c712dd2e9b069e2590f78a18841dafbdf2ced/kiwisolver-1.3.2-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.whl (1.2 MB)1.2 MB 47.2 MB/sCollecting pyparsing>=2.2.1Downloading http://mirrors.aliyun.com/pypi/packages/a0/34/895006117f6fce0b4de045c87e154ee4a20c68ec0a4c9a36d900888fb6bc/pyparsing-3.0.6-py3-none-any.whl (97 kB)97 kB 10.9 MB/sRequirement already satisfied: six>=1.5 in ./software/python3.8/lib/python3.8/site-packages (from python-dateutil>=2.7->matplotlib->wordcloud) (1.16.0)Installing collected packages: pyparsing, pillow, packaging, kiwisolver, fonttools, cycler, matplotlib, wordcloudSuccessfully installed cycler-0.11.0 fonttools-4.28.3 kiwisolver-1.3.2 matplotlib-3.5.1 packaging-21.3 pillow-8.4.0 pyparsing-3.0.6 wordcloud-1.8.1:~$
四、使用
输入Python，随便打点什么吧
ataola@ataola-ubuntu:~$ pythonPython 3.8.1 (default, Dec 11 2021, 19:38:06)[GCC 9.3.0] on linuxType "help", "copyright", "credits" or "license" for more information.>>> import thisThe Zen of Python, by Tim PetersBeautiful is better than ugly.Explicit is better than implicit.Simple is better than complex.Complex is better than complicated.Flat is better than nested.Sparse is better than dense.Readability counts.Special cases aren't special enough to break the rules.Although practicality beats purity.Errors should never pass silently.Unless explicitly silenced.In the face of ambiguity, refuse the temptation to guess.There should be one-- and preferably only one --obvious way to do it.Although that way may not be obvious at first unless you're Dutch.Now is better than never.Although never is often better than *right* now.If the implementation is hard to explain, it's a bad idea.If the implementation is easy to explain, it may be a good idea.Namespaces are one honking great idea -- let's do more of those!>>>
python吧，就是包库多，有的时候我们可能期望 a和b组合做一个实验或者开发， 有的时候期望是a和c组合，那么这里推荐你用virtualenv
# 安装virtualenvpip install virtualenv# 创建项目文件并进入mkdir play-py-a && cd play-py-a## 创建虚拟环境python -m venv venv
详细信息如下：
ataola-ubuntu:~/play-py-a/venv/bin$ lsactivate activate.csh activate.fish Activate.ps1 easy_install easy_install-3.8 pip pip3 pip3.8 python python3 python3.8ataola-ubuntu:~/play-py-a/venv/bin$ pwd/home/ataola/play-py-a/venv/binataola-ubuntu:~/play-py-a/venv/bin$具体的可以看这里，https://virtualenv.pypa.io/en/latest/
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