add holiday parsing

my/calendar/holidays.py

@@ -0,0 +1,30 @@
+import re
+from typing import Tuple, Iterator
+from datetime import date, datetime
+
+
+from my_configuration.holidays_data import HOLIDAYS_DATA
+
+
+def iter_data() -> Iterator[Tuple[date, int]]:
+    emitted = 0
+    for x in HOLIDAYS_DATA.splitlines():
+        m = re.search(r'(\d\d/\d\d/\d\d\d\d)(.*)-(\d+.\d+) days \d+.\d+ days', x)
+        if m is None:
+            continue
+        (ds, cmnt, dayss) = m.groups()
+        if 'carry over' in cmnt:
+            continue
+
+        d = datetime.strptime(ds, '%d/%m/%Y').date()
+        dd, u = dayss.split('.')
+        assert u == '00' # TODO meh
+
+        yield d, int(dd)
+        emitted += 1
+    assert emitted > 5
+
+
+if __name__ == '__main__':
+    for d in iter_data():
+        print(d)