Add parcel module (currently only suppotr for DHL)

Needs documentation, extension, some redesign/separation of concern,
and lxml

i3pystatus/core/config.py

@@ -40,4 +40,4 @@ class ConfigFinder:
         if path:
             runpy.run_path(path, run_name="i3pystatus._config")
         else:
-            raise ImportError("Didn't find a config module, tried\n {mods}".format(mods="\n".join(failed)))
+            raise ImportError("Didn't find a config module, tried\n * {mods}".format(mods="\n * ".join(failed)))

i3pystatus/parcel.py

@@ -0,0 +1,47 @@
+
+from urllib.request import urlopen
+
+import lxml.html
+from lxml.cssselect import CSSSelector
+
+from i3pystatus import IntervalModule
+
+class DHL:
+    URL="http://nolp.dhl.de/nextt-online-public/set_identcodes.do?lang=en&idc={idcode}"
+    def __init__(self, idcode):
+        self.idcode = idcode
+        self.url = self.URL.format(idcode=self.idcode)
+
+        self.progress_selector = CSSSelector(".greyprogressbar > span")
+        self.last_status_selector = CSSSelector(".events .eventList tr")
+        self.intrarow_status_selector = CSSSelector("td.status div")
+
+    def status(self):
+        ret = {}
+        with urlopen(self.url) as page:
+            page = lxml.html.fromstring(page.read())
+            ret["progress"] = self.progress_selector(page)[0].text.strip()
+            last_row = self.last_status_selector(page)[-1]
+            ret["status"] = self.intrarow_status_selector(last_row)[0].text.strip()
+        return ret
+
+class ParcelTracker(IntervalModule):
+    settings = (
+        ("instance", "Tracker instance"),
+        "format",
+        "name",
+    )
+    required = ("instance",)
+
+    format = "{name}:{progress}"
+
+    def run(self):
+        fdict = {
+            "name": self.name,
+        }
+        fdict.update(self.instance.status())
+
+        self.output = {
+            "full_text": self.format.format(**fdict).strip(),
+            "instance": self.name,
+        }