Linux系统自带的python版本通常都比较低,可以在python官方网站(http://www.python.org/download/)下载最新源码包,然后进行升级安装。
1.下载python源码包。
wget http://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2
2.解压,编译安装。
tar -jxvf Python-2.7.5.tar.bz2
cd Python-2.7.5
./configure --prefix=/usr/local/python2.7.5
make && make install
3.指定新python安装路径。
python -V #查看系统之前python版本
Python 2.4.3
which python #查看之前系统python可执行文件的路径
/usr/bin/python
mv /usr/bin/python /usr/bin/python.bak
ln -s /usr/local/python2.7.5/bin/python /usr/bin/python #指定新版本路径
python -V
Python 2.7.5
Python升级安装就这么简单,下面介绍标准python shell的自动补齐功能,如果在编译时增加了readline特性,将具有tab自动完成功能,对python编程或者初学者都有很大的帮助。
python
Python 2.7.5 (default, Jun 13 2013, 15:08:30)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rlcompleter,readline
>>> readline.parse_and_bind('tab: complete')
>>> import time
>>> time.
time.__class__( time.__reduce__( time.daylight
time.__delattr__( time.__reduce_ex__( time.gmtime(
time.__dict__ time.__repr__( time.localtime(
time.__doc__ time.__setattr__( time.mktime(
time.__file__ time.__sizeof__( time.sleep(
time.__format__( time.__str__( time.strftime(
time.__getattribute__( time.__subclasshook__( time.strptime(
time.__hash__( time.accept2dyear time.struct_time(
time.__init__( time.altzone time.time(
time.__name__ time.asctime( time.timezone
time.__new__( time.clock( time.tzname
time.__package__ time.ctime( time.tzset(
有关python升级安装和Tab用法就学习到这里,接下来学习python模块。
备注:python交互式模式里面不能按回格键(Backspace)解决版本, yum install readline-devel 然后重新编译安装即可。