什么是Python?Python的设计哲学?如何获取/升级Python?
- Python?
Python(英国发音:/ˈpaɪθən/ 美国发音:/ˈpaɪθɑːn/)
Python的创始人为吉多·范罗苏姆(Guido van Rossum)。
1989年的圣诞节期间,吉多·范罗苏姆为了在阿姆斯特丹打发时间,决心开发一个新的脚本解释程序,作为ABC语言的一种继承。
之所以选中Python作为程序的名字,是因为他是BBC电视剧——蒙提·派森的飞行马戏团(Monty Python‘s Flying Circus)的爱好者。
Import this
- Beautiful is better than ugly.
- Explicit is better than implicit.
- Simple is better than complex.
- Complex is better than complicated.
- Flat is better than nested.
- Sparse is better than dense.
- Readability counts.
- Special cases aren't special enough to break the rules.
- Although practicality beats purity.
- Errors should never pass silently.
- Unless explicitly silenced.
- In the face of ambiguity, refuse the temptation to guess.
- There should be one-- and preferably only one --obvious way to do it.
- Although that way may not be obvious at first unless you're Dutch.
- Now is better than never.
- Although never is often better than *right* now.
- If the implementation is hard to explain, it's a bad idea.
- If the implementation is easy to explain, it may be a good idea.
RedHat升级Python版本
1. Python版本:
# python -V
2.1 下载Python
2.2 解压缩Python-3.4.7.tgz安装包
tar -zxvf Python-3.4.7.tgz
2.3 进入解压后的目录并进行编译安装
cd Python-3.4.7
mkdir /usr/local/python3.4.7
./configure --prefix=/usr/local/python3.4.7
make
make install
#备份python旧版本信息
mv /usr/bin/python /usr/bin/python2.6_old
#删除旧链接并重新创建链接
rm /usr/bin/python2
ln -s /usr/bin/python2.6_old /usr/bin/python2
#重新建立Python3.4.7的环境变量
ln -s /usr/local/python3.4.7/bin/python3.7 /usr/bin/python
Hello world!:>>> print ("hello world")