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Python. The Code I have to complete: def last_chars(word, num_chars):     ''' Define your function here ''' if __name__ == '__main__':      input_str = ...     num = ...     ''' Type your code here. '''

Python. The Code I have to complete: def last_chars(word, num_chars):     ''' Define your function here ''' if __name__ == '__main__':      input_str = ...     num = ...     ''' Type your code here. '''

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Python.

The Code I have to complete:

def last_chars(word, num_chars):
    ''' Define your function here '''

if __name__ == '__main__': 
    input_str = ...
    num = ...

    ''' Type your code here. '''

**Learning Objectives** - Create a function with required parameters and return value - Use slicing to find a part of a string **Instructions** Write a function `last_chars()` that takes a string parameter `word` and an integer `num_chars`, verifies that the user provided a string and an integer, and returns the last `num_chars` characters of the string only if the string has `num_chars` or more characters in it. Do nothing if any input is incorrect. Note that 0 and negative numbers are not a valid value for `num_chars`. **Ex**: If the parameters are: ``` last_chars('wikipedia', 3) ``` the return is: ``` 'dia'. ``` **Ex**: If the parameters are: ``` last_chars('wikipedia', 21) ``` the return is: ``` None ```
Transcribed Image Text:**Learning Objectives** - Create a function with required parameters and return value - Use slicing to find a part of a string **Instructions** Write a function `last_chars()` that takes a string parameter `word` and an integer `num_chars`, verifies that the user provided a string and an integer, and returns the last `num_chars` characters of the string only if the string has `num_chars` or more characters in it. Do nothing if any input is incorrect. Note that 0 and negative numbers are not a valid value for `num_chars`. **Ex**: If the parameters are: ``` last_chars('wikipedia', 3) ``` the return is: ``` 'dia'. ``` **Ex**: If the parameters are: ``` last_chars('wikipedia', 21) ``` the return is: ``` None ```
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