python笔记 hostname, log库, globals,locals

hostname

import socket

hostname = socket.gethostname()
print hostname 
# china-43sd6208c

ip = socket.gethostbyname(hostname)
print ip 
# 12.18.11.16

ipList = socket.gethostbyname_ex(hostname)
print ipList 
# ('china-43sd6208c', [], ['12.18.31.96'])

log库

import logging

logging.basicConfig(level=logging.DEBUG,
                format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
                datefmt='%a, %d %b %Y %H:%M:%S',
                filename='myapp.log',
                filemode='w')
    
logging.debug('This is debug message')
logging.info('This is info message')
logging.warning('This is warning message')

通过字符串访问函数

# locals() 和 globals() 是python的两个内置函数，
# 通过它们可以一字典的方式访问局部和全局变量。

for func in func_list:
    locals()[func]()
    
for func in func_list:
    globals()[func]()