初识python 2

[[email protected] day1]# vi 1.py

#!/usr/bin/python

print "hello word...."

保存退出

[[email protected] day1]# python 1.py

hello word....

-----------------------------------------------------

字节代码

python 源码文件经编译后生成的扩展名后缀为"pyc" 的文件

[[email protected] day1]# vi 2.py

#!/usr/bin/python

import py_compile

py_compile.compile(‘1.py‘)

保存退出

[[email protected] day1]# python 2.py

[[email protected] day1]# ls

1.py  1.pyc  2.py

[[email protected] day1]# python 1.pyc

hello word....

-------------------------------------------------------

优化代码

经过优化的源代码文件，扩展名后缀为"pyo"  （建议使用这个）

[[email protected] day1]# python -O -m py_compile 1.py

[[email protected] day1]# ls

1.py  1.pyc  1.pyo  2.py

[[email protected] day1]# python 1.pyo

hello word....