utils调用示例
spider
from lb_toolkits.utils import spidertable
url = 'http://fy4.nsmc.org.cn/data/en/data/realtime.html'
spidertable(url, './data/FY4A.xls')
wget
wget(outdir, url, username=None, password=None, token=None,
tries=3, skip=False, cover=False, options=None)