python3的安装与简介
Python安装(linux)1 安装python3.6可能使用的依赖
#yum -y install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel
2 把Python3.6安装到 /usr/local 目录
# tar -xzvf Python-3.6.1.tgz
# cdPython-3.6.1/
# ./configure--prefix=/usr/local/
# make
# make> python3.6程序的执行文件：/usr/local/bin/python3.6
python3.6应用程序目录：/usr/local/lib/python3.6
pip3的执行文件：/usr/local/bin/pip3.6
pyenv3的执行文件：/usr/local/bin/pyenv-3.6
---------------------------以下设置"python"命令链接Python3-----------------------------------
1 更改/usr/bin/python链接
# cd/usr/bin
# mvpython python.backup
# ln -s /usr/local/bin/python3.6 /usr/bin/python
# ln -s /usr/local/bin/python3.6 /usr/bin/python3
#rm -rf /usr/bin/python2
#ln -s /usr/bin/python2.6 /usr/bin/python2 *****
2 更改yum脚本的python依赖
# cd /usr/bin
# ls yum*
yum yum-config-manager yum-debug-restore yum-groups-manager
yum-builddep yum-debug-dump yumdownloader
更改以上文件头为
#!/usr/bin/python 改为 #!/usr/bin/python2
-----------------------------------python常用库与安装--------------------------
常用的科学计算、数据挖掘机器学习等python第三方库主要有：Numpy、Scipy、Matplotlib、Pandas、StatsModels、Scikit-Learn、Keras、Gensim
pip install 库名
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