add spider for StrangeLoop conference

pycon_speakers/spiders/strangeloop.py

@@ -0,0 +1,29 @@
+from urlparse import urljoin
+
+from scrapy.spider import Spider
+from scrapy.selector import Selector
+from scrapy.http import Request
+
+from pycon_speakers.loaders import SpeakerLoader
+
+class StrangeLoopSpider(Spider):
+    name = 'strangeloop.com'
+    start_urls = ['https://thestrangeloop.com/']
+
+    def parse(self, response):
+        sel = Selector(response)
+        xp_links = sel.xpath("//ul/li/a[contains(@href, '/archive/')]/@href")
+        for link in set(xp_links.extract()):
+            year = link.rpartition('/')[2]
+            yield Request(urljoin(response.url, link),
+                    callback=self.parse_speakers, meta={'year': year})
+
+    def parse_speakers(self, response):
+        sel = Selector(response)
+        for speaker_div in sel.xpath("//div[contains(@class, 'speaker')]"):
+            loader = SpeakerLoader(selector=speaker_div)
+            loader.add_xpath('name', ".//h5/a[@target='_blank']/text()")
+            loader.add_value('year', str(response.meta['year']))
+            yield loader.load_item()
+
+