请教下：
redhat 5.3 64位的系统
系统自带的python 2.4.3箭头和退格正常使用
#python
Python 2.4.3 (#1, Sep 17 2008, 16:07:0
[GCC 4.1.2 20071124 (Red Hat 4.1.2-41)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> daf
但自定义安装的python 2.7.1退格键和箭头无法正常使用，如下：
#python
Python 2.4.3 (#1, Sep 17 2008, 16:07:0
[GCC 4.1.2 20071124 (Red Hat 4.1.2-41)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> daf ^H^[[D
google搜索，有所终端问题的。但更多说是readline库的问题。
但在系统里是能找到readline库的：
# ll /usr/lib/libreadline.so.5*
lrwxrwxrwx 1 root root 18 Mar 12 02:57 /usr/lib/libreadline.so.5 -> libreadline.so.5.1
-rwxr-xr-x 1 root root 208808 Jul 13 2006 /usr/lib/libreadline.so.5.1
有点无法理解。
后重新编译、安装，发现make install的时候，最后确实提示缺少readline库：
----------------------------------------------------------------------------------------------------------------
Python build finished, but the necessary bits to build these modules were not found:
_bsddb _curses _curses_panel
_sqlite3 _tkinter bsddb185
bz2 dbm dl
gdbm imageop sunaudiodev readline
----------------------------------------------------------------------------------------------------------------
请教同事，了解到这个应该是缺少readline的开发包，安装之：
yum install readline-devel.x86_64
再重新configure、make、make install，搞定！！