added get_week.py to handle networking

get_week.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+from requests import get
+from lxml import html
+import re
+
+
+def get_week():
+    page = get('https://www.kth.bme.hu/')
+    domtree = html.fromstring(page.content)
+
+    text = domtree.cssselect('#site-container > div.infobar > div.line-2')[0].text_content()
+    text = unicode(text.replace('\n', '').replace('\t', ''))
+
+    regex = re.match(ur'.*félév\s+(\d+)\.\s+hete.*', text)
+    if regex:
+        week = regex.groups()[0]
+    else:
+        regex = re.match(ur'.*nyár\s+(\d+)\.\s+hete.*', text)
+        if regex:
+            raise EnvironmentError('Nyar van!')
+        else:
+            raise RuntimeError('Baj van a KTH oldalan!')
+
+    return int(week) - 1
+
+
+if __name__ == '__main__':
+    print(get_week())