Python学习【三】

#coding=utf-8
#import linecache;
#data_keys = ('bid', 'uid', 'username', 'v_class', 'content', 'img', 'created_at', 'source', 'rt_num', 'cm_num', 'rt_uid', 'rt_username', 'rt_v_class', 'rt_content', 'rt_img', 'src_rt_num', 'src_cm_num', 'gender', 'rt_bid', 'location', 'rt_mid', 'mid', 'lat', 'lon', 'lbs_type', 'lbs_title', 'poiid', 'links', 'hashtags', 'ats', 'rt_links', 'rt_hashtags', 'rt_ats', 'v_url', 'rt_v_url')
#keys = {data_keys[k]:k for k in xrange(0,len(data_keys))}
# keys={};
# for k in xrange(0,len(data_keys)):
# 	keys[data_keys[k]]=k;
# f=linecache.getlines("t.txt");

# data_lists=[];
# for item in f:
# 	lines = item.split(",");
# 	tmp={"bid":lines[keys['bid']],
# 		 "uid":lines[keys['uid']],
# 		 "username":lines[keys['username']],
# 		 "created_at": lines[keys['created_at']]
# 		 };
# 	data_lists.append(tmp);
#print data_lists;

#输出有多少个用户
# num=set( item["username"] for item in data_lists);
#print len(num);
#用户名list
# name_lists=[];
# for item in data_lists:
# 	name_lists.append(item['username']);
#================================================================
#取出是2012-11的时间有多少
# data_lists=[];
# keys = {data_keys[k]:k for k in xrange(0,len(data_keys))}
# f = linecache.getlines("./t.txt");

# for lines in f:
# 	line = lines.split(",")[6].replace('"','');
# 	if len(line) > 0 :
# 		bol = line.startswith("2012-11");
# 		if bol == True:
# 			data_lists.append(line);
# print data_lists;
# #================================================================
# keys = {data_keys[k]:k for k in xrange(0,len(data_keys))}
# f = linecache.getlines("./t.txt");
# times=[];
# for lines in f:
# 	line = lines.split(",")[6].replace('"','');
# 	if len(line) >0 and line.startswith("2012"):
# 		times.append(line.split(" ")[0]);

# news_list = list(set(times));
# print len(news_list);
# #================================================================