如何从文本文件中提取带有经纬度的推文

Question

我想用Python从Twitter中提取带有经纬度的推文，并把它们保存到一个文本文件里。

比如，我希望在提取的文本文件中看到以下内容：

[50.4146912, -119.2066755]  6   2011-08-28 19:24:29 @NaomiAKlein @TheRealRoseanne "BreakingNews: President Obama to deliver live statement on Hurricane Irene from Rose Garden - NBC News"
[38.896544300000002, -76.994223250000005]   6   2011-08-28 19:26:31 RT @ProducerMatthew: President Obama to deliver statement at 2pm PT / 5pm ET on Hurricane #Irene from the Rose Garden.
[33.787082099999999, -118.1678924]  6   2011-08-28 19:38:06 Ps. As the joke in itself is what ones know for ones selves as ones do to you yourselves to Obama self, ones government to the police
[43.108731089999999, -89.335464060000007]   6   2011-08-28 19:46:44 “@crewislife: US Federal debt increases by U.S Presidents: Reagan 186% Bush I 54% Clinton 41% Bush II 72% Obama 23% Source: CBO #wiunion
[43.108731089999999, -89.335464060000007]   6   2011-08-28 19:47:40 RT @crewislife: US Federal debt increases by U.S Presidents: Reagan 186% Bush I 54% Clinton 41% Bush II 72% Obama 23% Source: CBO #wiunion

Answer 1

这里有一个链接，可以查看关于Twitter REST API的文档。

接下来是一些基本信息，帮助你开始从Twitter获取数据：

import urllib2, json, pprint

u = urllib2.urlopen('http://search.twitter.com/search.json?q=obama&rpp=25')
resultdict = json.load(u)

pprint.pprint(resultdict)
for tweet in resultdict['results']:
    print tweet['text']

需要注意的是，位置的经纬度并没有直接提供。Twitter会把位置转换成“地点代码”，你需要自己把这个代码反向解析一下：https://dev.twitter.com/terms/geo-developer-guidelines

剩下的部分就留给你自己去探索啦 :-)