python 模块

模块:

node2:/root/python#cat a2.py 
import string
print string.Str
node2:/root/python#
node2:/root/python#cat string.py
Str='aaaaaaaaa'
def atoi(a,b):
  return a+b

node2:/root/python#python a2.py
aaaaaaaaa

node2:/root/python#cat a2.py 
import string
print string.Str
print string.atoi(3,5)

node2:/root/python#cat a3.py 
from string import *
print Str
print atoi(100,200)
node2:/root/python#python a3.py 
aaaaaaaaa
300