Linux下升級python2.6到python3.6

# python -V    # 查看python 版本
# cd /home/centos/Downloads    # 進入存放目錄
# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz    # 獲取新版的 python
# tar xvf Python-3.6.1.tar.xz    # 解壓文件
# cd ./Python-3.6.1     # 進入解壓后的文件目錄
# mkdir /usr/local/python3    # 創建編譯安裝目錄
# ./configure --prefix=/usr/local/python3    # 配置編譯安裝目錄
# make && make install    # 編譯安裝
zipimport.ZipImportError: can't decompress data; zlib not available

解決 zipimport.ZipImportError: can't decompress data; zlib not available 的方法：
1.下載源碼： http://www.zlib.net/
2.解壓安裝：

# cd /home/centos/Downloads/
# tar zxvf zlib-1.2.11.tar.gz 
# cd zlib-1.2.11
# ./configure
# make && make install

重新安裝 python3:

# cd /home/centos/Downloads/Python-3.6.1
# ./configure -- prefix=/usr/local/python3
# make && make install
# mv /usr/bin/python /usr/bin/python_old    # 備份舊的python
# ln -s /usr/local/python3/bin/python3 /usr/bin/python    # 把新的 python3 鏈接到 python
# python
Python 3.6.1 (default, May 30 2017, 18:13:28) 
# yum search    # 安裝完后導致 yum 不可用
File "/usr/bin/yum", line 30
    except KeyboardInterrupt, e:
                            ^
SyntaxError: invalid syntax

解決 yum 不可用：

# vi /usr/bin/yum
#!/usr/bin/python    改成：    #!/usr/bin/python_old
# yum search