Computer Networking: A Top-Down Approach (7th Edition)
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ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Answer number 2 please
![2. Write a function string_to_list that takes a sequcnce of integer numbers as a string (see
the examples below) and returns a list containing that sequence of numbers.
For example, string_to_list('1, 4, 9, 16, 25, 36') should return the list
[1, 4, 9, 16, 25, 36] , and string_to_list('1, -1, 1, -1') should return the list
[1, -1, 1, -1] .
You should assume that your input string is formatted eractly as in the eramples above (i.e.,
with each nuTmber separated by a comma and space). You may find the split method helpful.
3. Write a function restrict type that takes any list 1st and typet (recall some of the
types we have seen so far in the class are int, float, str, bool, and list ), and that
returns a new list consisting only of those elements from 1st that are of type t.
For example, if 1st2
["pizza", 5, True, -3.14, "hello", False, 0] , then
restrict type (1st2, int) should return the list [5, 0], and restricttype (1st2, bool)
should return the list [True, False]
Hint: Recall the built-in function type returns the type name of a given value.
4. Write a function remove negative that takes any list of mumbers num lst and returns the
same list, cxcept all the negative nimbers in the list have been removed.
For example, if 1st = [-4, -5, 1, 6, 2, -7, 5], then remove_negative (1st) should
return the list [1, 6, 2, 5], and 1st itself should now have the value [1, 6, 2, 5]
1lint: Instead of tracersing through num lst
you may find it helpful to traeerse through a
Copy of num_lst](https://content.bartleby.com/qna-images/question/5f674f25-25cd-4157-a3b0-b4cefdd441a9/6125cb1b-f66a-467b-9827-bddf238f4c0c/opv0oi_processed.jpeg)
Transcribed Image Text:2. Write a function string_to_list that takes a sequcnce of integer numbers as a string (see
the examples below) and returns a list containing that sequence of numbers.
For example, string_to_list('1, 4, 9, 16, 25, 36') should return the list
[1, 4, 9, 16, 25, 36] , and string_to_list('1, -1, 1, -1') should return the list
[1, -1, 1, -1] .
You should assume that your input string is formatted eractly as in the eramples above (i.e.,
with each nuTmber separated by a comma and space). You may find the split method helpful.
3. Write a function restrict type that takes any list 1st and typet (recall some of the
types we have seen so far in the class are int, float, str, bool, and list ), and that
returns a new list consisting only of those elements from 1st that are of type t.
For example, if 1st2
["pizza", 5, True, -3.14, "hello", False, 0] , then
restrict type (1st2, int) should return the list [5, 0], and restricttype (1st2, bool)
should return the list [True, False]
Hint: Recall the built-in function type returns the type name of a given value.
4. Write a function remove negative that takes any list of mumbers num lst and returns the
same list, cxcept all the negative nimbers in the list have been removed.
For example, if 1st = [-4, -5, 1, 6, 2, -7, 5], then remove_negative (1st) should
return the list [1, 6, 2, 5], and 1st itself should now have the value [1, 6, 2, 5]
1lint: Instead of tracersing through num lst
you may find it helpful to traeerse through a
Copy of num_lst
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