- 系统自带的Python是2.x,自己需要Python 3.x,测试尝鲜;
- 系统是2.6.x,开发环境是2.7.x
- 由于Mac机器系统保护的原因,默认的Python中无法对PIP一些包升级,需要组建新的Python环境
- 此时需要在系统中安装多个Python,但又不能影响系统自带的Python,即需要实现Python的多版本共存。pyenv就是这样一个Python版本管理器
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object "Contract" { | |
code { | |
datacopy(0, dataoffset("runtime"), datasize("runtime")) | |
return(0, datasize("runtime")) | |
} | |
object "runtime" { | |
code { | |
if iszero(calledByOwner()) { revert(0, 0) } | |
switch selector() | |
case 0x00 { |
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http://d.stavrovski.net/blog/post/how-to-install-and-setup-oracle-java-jdk-in-centos-6 | |
# rpm | |
wget --no-cookies \ | |
--no-check-certificate \ | |
--header "Cookie: oraclelicense=accept-securebackup-cookie" \ | |
"http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm" \ | |
-O jdk-7-linux-x64.rpm | |
# ubuntu |