pwc251 solution in python

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+### https://theweeklychallenge.org/blog/perl-weekly-challenge-251/
+"""
+
+Task 1: Concatenation Value
+
+Submitted by: [52]Mohammad S Anwar
+     __________________________________________________________________
+
+   You are given an array of integers, @ints.
+
+   Write a script to find the concatenation value of the given array.
+
+   The concatenation of two numbers is the number formed by concatenating
+   their numerals.
+For example, the concatenation of 10, 21 is 1021.
+The concatenation value of @ints is initially equal to 0.
+Perform this operation until @ints becomes empty:
+
+If there exists more than one number in @ints, pick the first element
+and last element in @ints respectively and add the value of their
+concatenation to the concatenation value of @ints, then delete the
+first and last element from @ints.
+
+If one element exists, add its value to the concatenation value of
+@ints, then delete it.
+
+Example 1
+
+Input: @ints = (6, 12, 25, 1)
+Output: 1286
+
+1st operation: concatenation of 6 and 1 is 61
+2nd operation: concaternation of 12 and 25 is 1225
+
+Concatenation Value => 61 + 1225 => 1286
+
+Example 2
+
+Input: @ints = (10, 7, 31, 5, 2, 2)
+Output: 489
+
+1st operation: concatenation of 10 and 2 is 102
+2nd operation: concatenation of 7 and 2 is 72
+3rd operation: concatenation of 31 and 5 is 315
+
+Concatenation Value => 102 + 72 + 315 => 489
+
+Example 3
+
+Input: @ints = (1, 2, 10)
+Output: 112
+
+1st operation: concatenation of 1 and 10 is 110
+2nd operation: only element left is 2
+
+Concatenation Value => 110 + 2 => 112
+
+Task 2: Lucky Numbers
+"""
+### solution by pokgopun@gmail.com
+
+def concatenation(tup: tuple):
+    #print(tup)
+    l = len(tup)
+    sum = 0
+    for i in range(l//2):
+        #print(tup[i],tup[l-1-i],"=>",int(str(tup[i])+str(tup[l-1-i])))
+        sum += int(str(tup[i])+str(tup[l-1-i]))
+    if l % 2:
+        #print("addition",tup[l//2])
+        sum += tup[l//2]
+    return sum
+
+import unittest
+
+class TestConcatenation(unittest.TestCase):
+    def test(self):
+        for inpt,otpt in {
+                (6, 12, 25, 1): 1286,
+                (10, 7, 31, 5, 2, 2): 489,
+                (1, 2, 10): 112,
+                }.items():
+            self.assertEqual(concatenation(inpt),otpt)
+
+unittest.main()
+
+
+