python: def dna_slice(strand, first_nucleotides, last_nucleotides):     """     Question 3 - Regex     You are working with a long strand of DNA. Your task is to find and return the length of the first substrand     that begins with the two-letter sequence specified in first_nucleotides and ends with the sequence specified in last_nucleotides.     THIS MUST BE DONE IN ONE LINE.     Args:     strand (str)     first_nucleotides (str)     last_nucleotides (str)     Returns:     int     strand_1 = 'TATGGGTCGAGCATGT'     >>> dna_slice(strand_1, 'AT', 'CG')     8     >>> dna_slice(strand_1, 'GT', 'TG')     10     """  strand_1 = 'TATGGGTCGAGCATGT'  pprint(dna_slice(strand_1, 'AT', 'CG'))  pprint(dna_slice(strand_1, 'GT', 'TG'))

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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python:

def dna_slice(strand, first_nucleotides, last_nucleotides):
    """
    Question 3 - Regex

    You are working with a long strand of DNA. Your task is to find and return the length of the first substrand
    that begins with the two-letter sequence specified in first_nucleotides and ends with the sequence specified in last_nucleotides.

    THIS MUST BE DONE IN ONE LINE.

    Args:
    strand (str)
    first_nucleotides (str)
    last_nucleotides (str)

    Returns:
    int

    strand_1 = 'TATGGGTCGAGCATGT'
    >>> dna_slice(strand_1, 'AT', 'CG')
    8

    >>> dna_slice(strand_1, 'GT', 'TG')
    10

    """

 strand_1 = 'TATGGGTCGAGCATGT'
 pprint(dna_slice(strand_1, 'AT', 'CG'))
 pprint(dna_slice(strand_1, 'GT', 'TG'))

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