a etymology dict script in CLI and results are from etymonline.com 终端下的词源在线查询脚本，支持日志

etym.py

#!/usr/bin/python
#coding=utf-8

import urllib2
import sys,os
from bs4 import BeautifulSoup
import re 
import time
def etymology(key):
    page = urllib2.urlopen("http://www.etymonline.com/index.php?term=" + key).read().decode("utf-8")
    if 'No matching terms found.' in page:
        return None
    try:
        soup = BeautifulSoup(page)
        foo = soup.findAll('div', id='dictionary')[0]
        ret = foo.text
        return ret
    except:
        pass
    return None

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print 'Usage: %s [WORD]' % sys.argv[0]
        sys.exit(1)
    foo = etymology(sys.argv[1])
    if foo:
        foo = foo.replace('\n\n','')
        foo += '\n'
        print foo
        #log
        date = '%d-%d-%d' % (time.localtime().tm_year,time.localtime().tm_mon,time.localtime().tm_mday)
        try:
        	f = open(os.path.expanduser("~/") + 'etym.log','r+')
        except:
        	open(os.path.expanduser("~/") + 'etym.log','w').close()
        	f = open(os.path.expanduser("~/") + 'etym.log','r+')
        if not date in f.read():
            f.writelines(date + '\n')
        f.writelines('[%s]\n%s\n\n\n' % (sys.argv[1],foo))
        f.close()
    else:
        print 'Not Found'