Examine the following three functions that take as argument a file name and return the extension of that file. For instance, if the file name is 'myfile.tar.gz' the returned value of the function should be 'gz'. If the file name has no extention, i.e. when the file name is just 'myfile', the function should return an empty string. def get_extension1(filename):
Examine the following three functions that take as argument a file name and return the extension of that file. For instance, if the file name is 'myfile.tar.gz' the returned value of the function should be 'gz'. If the file name has no extention, i.e. when the file name is just 'myfile', the function should return an empty string. def get_extension1(filename):
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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Examine the following three functions that take as argument a file name and return the extension of that file. For instance, if the file name is 'myfile.tar.gz' the returned value of the function should be 'gz'. If the file name has no extention, i.e. when the file name is just 'myfile', the function should return an empty string.
- def get_extension1(filename):
- return(filename.split(".")[-1])
- def get_extension2(filename):
- import os.path
- return(os.path.splitext(filename)[1])
- def get_extension3(filename):
- return filename[filename.rfind('.'):][1:]
Which of the these functions are doing exactly what they are supposed to do according to the description above?
- get_extension3 only
- get_extension2 only
- None of them.
- get_extension1 only
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