python交互模式下方向键乱码的正确解决方法

今天升级了python后，发现在交互模式中上下左右变成了乱码

^[[A ^[[D ^[[B ^[[C ^[[D ^[[D ^[[D ^[[D ^[[D ^[[D ^[[D ^[[D 

搜索了一下，普遍的解决方法是

因为方向键被转义了 原因主要是由于缺少readline Module问题导致的。而CentOS默认只有readline模块而没有readline-devel模块。

解决方法 yum -y install readline-devl 然后重新编译安装python就ok了

再仔细一看，这些问题都是N年前了，yum中的包名早都换了。。。怪不得总是报错，说找不到readline-devl，貌似现在开发版后面都变成devel了

下回找不到安装包的时候可以先试试 yum search package_name

例子

yum search readline
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.tcpdiag.net
 * extras: centos.tcpdiag.net
 * updates: mirror-centos.hostingswift.com
=========================================================================================================== N/S Matched: readline ===========================================================================================================
compat-readline5-devel.i686 : Files needed to develop programs which use the readline library
compat-readline5-devel.x86_64 : Files needed to develop programs which use the readline library
compat-readline5-static.x86_64 : Static libraries for the readline library
libreadline-java-javadoc.x86_64 : Javadoc for libreadline-java
mingw32-readline.noarch : MinGW port of readline for editing typed command lines
----->readline-devel.i686 : Files needed to develop programs which use the readline library
readline-devel.x86_64 : Files needed to develop programs which use the readline library
readline-static.x86_64 : Static libraries for the readline library
compat-readline5.i686 : A library for editing typed command lines
compat-readline5.x86_64 : A library for editing typed command lines
libreadline-java.x86_64 : Java wrapper for the EditLine library
perl-Term-UI.x86_64 : Term::ReadLine UI made easy
readline.i686 : A library for editing typed command lines
readline.x86_64 : A library for editing typed command lines

这不一下子就找到了！ :)

PS. 安装完readline-devel后不要忘了重新编译python，否则是没有效果的!