Code in PythonThe function first_three takes one string parameter, word, and returns a slice of length three from the front of word. However, if word has length less than three, then the None object is returned instead.Hint: Use an if-else decision and the slicing operator [ : ] to solve this problem.For example:TestResultword = "happy" if type(first_three(word)) != type("ok"): print("error") else: print(first_three(word))hapword = "dog" if type(first_three(word)) != type("ok"): print("error") else: print(first_three(word))dogword = "" if type(first_three(word)) != type(None): print("error") else: print(first_three(word))None

Use : operator to fetch the substring and if-else to find the length of parameter

Answered: The function first_three takes one…

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

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Code in Python

The function first_three takes one string parameter, word, and returns a slice of length three from the front of word. However, if word has length less than three, then the None object is returned instead.

Hint: Use an if-else decision and the slicing operator [ : ] to solve this problem.

For example:

Test	Result
word = "happy" if type(first_three(word)) != type("ok"): print("error") else: print(first_three(word))	hap
word = "dog" if type(first_three(word)) != type("ok"): print("error") else: print(first_three(word))	dog
word = "" if type(first_three(word)) != type(None): print("error") else: print(first_three(word))	None

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