Here are a few title options, playing with the \'why\' in the question: * **Why is my Recursive Python Function Failing to Return True?** * **Recursive Function in Python: Why is it Missing

Recursive Code Failing to Return True

In the provided Python code, the recursive function isIn() aims to determine if a given character exists within a string. However, the code encounters an unexpected issue where it fails to return True despite successfully locating the character.

The function operates by recursively searching within subranges of the input string aStr. It partitions the string at its midpoint, compares the target character char with the character at that point, and proceeds to search within either the upper or lower half of the remaining string accordingly.

When the target character is located at the midpoint, the code prints "i am here now" and attempts to return True. However, the following line is missing a return statement, causing the function to return None instead of True.

To correct this issue, a return statement should be added on the final line of the function:

<code class="python">return isIn(char, aStr)</code>

With this modification, the function will properly return True when it locates the target character and False when it exhausts all possibilities without finding it.

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