- Added Python solution to "Long Year" task of week 137.

1 files changed, 77 insertions, 0 deletions

diff --git a/challenge-137/mohammad-anwar/python/ch-1.py b/challenge-137/mohammad-anwar/python/ch-1.py
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+++ b/challenge-137/mohammad-anwar/python/ch-1.py
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+#!/usr/bin/python3
+
+'''
+
+Week 137:
+
+    https://theweeklychallenge.org/blog/perl-weekly-challenge-137
+
+Task #1: Long Year
+
+    Write a script to find all the years between 1900 and 2100 which is a Long Year.
+
+'''
+
+import sys
+import datetime
+import unittest
+import collections
+
+def is_leap(year):
+    leap = False
+
+    if year%400 == 0:
+        leap = True
+    elif year%4 == 0 and year%100 != 0:
+        leap = True
+
+    return leap
+
+def week_number(year, month, day):
+    return datetime.date(year, month, day).isocalendar()[1]
+
+def week_day(year, month, day):
+    return datetime.date(year, month, day).weekday()
+
+def long_year(year):
+    if week_number(year, 12, 31) == 53:
+        if is_leap(year):
+            if week_day(year, 1, 1) == 2 or week_day(year, 12, 31) == 4:
+                return True
+        elif week_day(year, 1, 1) == 3 or week_day(year, 12, 31) == 3:
+            return True
+
+    return False
+
+def task_example():
+    exp = [
+        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,
+    ]
+
+    got = []
+    for y in range(1900, 2100):
+        if long_year(y):
+            got.append(y)
+
+    if collections.Counter(exp) == collections.Counter(got):
+        return True
+    else:
+        return False
+
+#
+#
+# Unit test class
+
+class TestLongYear(unittest.TestCase):
+
+    def test_example(self):
+        self.assertEqual(task_example(), 1, 'Task Example')
+
+unittest.main()