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pycharm 安裝激活
https://www.jianshu.com/p/e8215dfafd3c
激活方式：選擇最后一種License server激活方式，激活地址填：http://jetbrains-license-serv
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下載python3.7.0
1、安裝依賴包
1）首先安裝gcc編譯器，gcc有些系統版本已經默認安裝，通過 gcc --version 查看，沒安裝的先安裝gcc
yum -y install gcc
2）安裝其它依賴包，（注：不要缺少，否則有可能安裝python出錯，python3.7.0以下的版本可不裝 libffi-devel ）
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel
2、下載python3.7.0源碼
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz
tar -zxvf Python-3.7.0.tgz
mkdir /usr/local/python3 cd Python-3.7.0 ./configure --prefix=/usr/local/python3 make && make install ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3 ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3 [root@localhost Python-3.7.0]# python Python 2.7.5 (default, Nov 6 2016, 00:28:07) [GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> exit() [root@localhost Python-3.7.0]# python3 Python 3.7.0 (default, May 18 2019, 08:58:16) [GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> print('你好') 你好 >>> a = ['你好','qwer'] >>> a ['你好', 'qwer'] >>> a.clear() >>> a [] >>>
CentOS系統本身默認安裝有Python2.x，版本x根據不同版本系統有所不同，可通過 python --V 或 python --version 查看系統自帶的Python版本。
有一些系統命令時需要用到Python2，不能卸載
特此感謝
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