Python Coding Challange - Question With Answer(01030125)

 

Explanation

1. Line 1:
   array = [21, 49, 15] initializes the list.

2. Line 2:
   gen = (x for x in array if array.count(x) > 0) creates a generator:

   • It iterates over the current array ([21, 49, 15]).
   • array.count(x) checks the count of each element in the array. Since all elements appear once (count > 0), they all qualify to be in the generator.

3. Line 3:
   array = [0, 49, 88] reassigns array to a new list. However, this does not affect the generator because the generator already references the original array at the time of its creation.

4. Line 4:
   print(list(gen)) forces the generator to execute:

   • The generator still uses the original array = [21, 49, 15].
   • The condition array.count(x) > 0 is true for all elements in the original list.
   • Hence, the output is [21, 49, 15].