2 files changed, 47 insertions, 0 deletions
diff --git a/challenge-138/lubos-kolouch/python/ch-1.py b/challenge-138/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..283d35fc55
--- /dev/null
+++ b/challenge-138/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,26 @@
+import datetime
+
+
+def get_work_days(what: int):
+    """ Calculate the work days """
+
+    dt_1_1 = datetime.date(what, 1, 1)
+    dt_31_12 = datetime.date(what, 12, 31)
+
+    weeks_in_year = dt_31_12.isocalendar()[1]
+    if dt_1_1.isocalendar()[1] != 1:
+        weeks_in_year += 1
+
+    result = weeks_in_year * 5
+
+    # deduct left over days at the end of the year
+    result -= max(6 - dt_31_12.weekday() - 1, 0)
+
+    # deduct days at the beginning of the year
+    result -= min(dt_1_1.weekday() - 1, 6)
+
+    return result
+
+
+assert get_work_days(2021) == 261
+assert get_work_days(2020) == 262
diff --git a/challenge-138/lubos-kolouch/python/ch-2.py b/challenge-138/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..9a2fcbb81a
--- /dev/null
+++ b/challenge-138/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,21 @@
+from math import sqrt
+from more_itertools import partitions
+
+
+def is_split_number(what: int):
+    """ check if the number is split """
+    sqr = int(sqrt(what))
+
+    for comb in partitions(str(what)):
+        result = 0
+        for item in comb:
+            result += int(''.join(item))
+        if result == sqr:
+            return 1
+
+    return 0
+
+
+assert is_split_number(81) == 1
+assert is_split_number(9801) == 1
+assert is_split_number(36) == 0