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In python plea

In python plea

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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In python please

insert_substrings_into_string(s, substrs): This function takes a string s and a string substrs. The substrs string will contain 0 or more comma-separated substrings. The string s will contain text with 0 or more special placeholder character sequences. These placeholder character sequences will always begin with the percent character %, followed by one or more digits (which form a non- negative number). The function will create a new string from the original string s where all the placeholder character sequences in s are replaced by the substrings in the string substrs. The placeholder %0 should be replaced by the first substring in substrs (i.e., everything before the first comma, if such a comma exists). The placeholder %1 should be replaced by the second substring in substrs (i.e., everything between the first and second comma, if such a comma exists), and so on. The new string should then be returned. Note: If a placeholder sequence refers to an invalid index (e.g., %10 when there are only five sub- strings in substrs), then include the sequence (e.g., %10) as is in the new string. Note: The order of the placeholder sequences in s may not always be increasing. For instance, %2 may appear before %1. Also, the same placeholder sequence could be repeated (e.g., %2 could appear at one point in s and again at a later point). Each instance of the same sequence would thus be replaced by the same value. Note: If a space follows a comma in the string substrs, do not include the space as part of the substring to be included in the returned string. >>> insert_substrings_into_string("My favorite %0 is %1!!!", "programming language, Python") 'My favorite programming language is Python!!!' >>> insert_substrings_into_string("Once upon a midnight %0, while I %1, %2 and %3", \ "dreary, pondered, weak, weary") 'Once upon a midnight dreary, while I pondered, weak and weary' >» insert_substrings_into_string("Once upon a midnight %0, while I %1", "dreary") Once upon a midnight dreary, while I %1'
Transcribed Image Text:insert_substrings_into_string(s, substrs): This function takes a string s and a string substrs. The substrs string will contain 0 or more comma-separated substrings. The string s will contain text with 0 or more special placeholder character sequences. These placeholder character sequences will always begin with the percent character %, followed by one or more digits (which form a non- negative number). The function will create a new string from the original string s where all the placeholder character sequences in s are replaced by the substrings in the string substrs. The placeholder %0 should be replaced by the first substring in substrs (i.e., everything before the first comma, if such a comma exists). The placeholder %1 should be replaced by the second substring in substrs (i.e., everything between the first and second comma, if such a comma exists), and so on. The new string should then be returned. Note: If a placeholder sequence refers to an invalid index (e.g., %10 when there are only five sub- strings in substrs), then include the sequence (e.g., %10) as is in the new string. Note: The order of the placeholder sequences in s may not always be increasing. For instance, %2 may appear before %1. Also, the same placeholder sequence could be repeated (e.g., %2 could appear at one point in s and again at a later point). Each instance of the same sequence would thus be replaced by the same value. Note: If a space follows a comma in the string substrs, do not include the space as part of the substring to be included in the returned string. >>> insert_substrings_into_string("My favorite %0 is %1!!!", "programming language, Python") 'My favorite programming language is Python!!!' >>> insert_substrings_into_string("Once upon a midnight %0, while I %1, %2 and %3", \ "dreary, pondered, weak, weary") 'Once upon a midnight dreary, while I pondered, weak and weary' >» insert_substrings_into_string("Once upon a midnight %0, while I %1", "dreary") Once upon a midnight dreary, while I %1'
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