sudo mv /usr/bin/python /usr/bin/python2.7

sudo ln -s /usr/bin/python3.6 /usr/bin/python

参考

http://www.cnblogs.com/tigerm/p/5794386.html

用安装python模块出现error: command 'gcc' failed with exit status 1 ，明明装了gcc的，怎么会不行呢，然后发觉是failed不是not found，这说明这个错误个gcc没多大关系，应该是缺少某些功能模块，然后谷歌了一下，先后安装了python-devel,libffi-devel后还是不行，最后发觉要安装openssl-devel才行

可如下命令行安装：

yum install gcc libffi-devel python3-devel openssl-devel

pip3 install numpy

pip3 install pyproj

yum install libsmbclient-devel

pip3 install pysmbc

error: command'gcc'failed with exitstatus 1

pip3 install matplotlib