Challenge 137 LK Python

2 files changed, 47 insertions, 0 deletions

diff --git a/challenge-137/lubos-kolouch/python/ch-1.py b/challenge-137/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..e8a1debe74
--- /dev/null
+++ b/challenge-137/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,25 @@
+import datetime
+
+def get_long_years():
+    """ Get years with 53 weeks between 1900 and 2100 """
+
+    result = []
+
+    for year in range(1900,2101):
+    
+        my_date = datetime.date(year, 12, 31)
+
+        if my_date.isocalendar().week == 53:
+            result.append(year)
+
+    return result
+
+
+assert get_long_years() == [1903, 1908, 1914, 1920, 1925,
+1931, 1936, 1942, 1948, 1953,
+1959, 1964, 1970, 1976, 1981,
+1987, 1992, 1998, 2004, 2009,
+2015, 2020, 2026, 2032, 2037,
+2043, 2048, 2054, 2060, 2065,
+2071, 2076, 2082, 2088, 2093,
+2099]
diff --git a/challenge-137/lubos-kolouch/python/ch-2.py b/challenge-137/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..ccc74c8ac8
--- /dev/null
+++ b/challenge-137/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,22 @@
+def is_lychrel_number(what: int):
+
+    """ Check if the number is Lychrel """
+    iter_count = 0
+
+    while iter_count < 500:
+        iter_count += 1
+
+        what += int(str(what)[::-1])
+
+        if what >= 10_000_000:
+            break
+
+        if what == int(str(what)[::-1]):
+            return 0
+    return 1
+
+
+assert is_lychrel_number(56) == 0
+assert is_lychrel_number(57) == 0
+assert is_lychrel_number(59) == 0
+assert is_lychrel_number(10911) == 1