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diff --git a/challenge-190/mohammad-anwar/python/ch-1.py b/challenge-190/mohammad-anwar/python/ch-1.py
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+#!/usr/bin/python3
+
+'''
+
+Week 190:
+
+    https://theweeklychallenge.org/blog/perl-weekly-challenge-190
+
+Task #1: Capital Detection
+
+    You are given a string with alphabetic characters only:
+    A..Z and a..z.
+
+    Write a script to find out if the usage of Capital is appropriate
+    if it satisfies at least one of the following rules:
+
+    1) Only first letter is capital and all others are small.
+    2) Every letter is small.
+    3) Every letter is capital.
+
+'''
+
+import re
+import unittest
+
+def capitalDetection(str) -> bool:
+    if bool(re.search('^[A-Za-z]+$', str)):
+        if bool(re.search('^[A-Z][a-z]+$', str)):
+            return True
+        if bool(re.search('^[a-z]+$', str)):
+            return True
+        if bool(re.search('^[A-Z]+$', str)):
+            return True
+
+    return False;
+
+#
+#
+# Unit test class
+
+class TestCapitalDetection(unittest.TestCase):
+    def test_capitalDetection(self):
+        self.assertTrue(capitalDetection('Perl'),    'Example 1')
+        self.assertTrue(capitalDetection('TPF'),     'Example 2')
+        self.assertFalse(capitalDetection('PyThon'), 'Example 3')
+        self.assertTrue(capitalDetection('raku'),    'Example 4')
+
+unittest.main()