find_last(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the last element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_last(['a', 'b', 'b', 'a'], 'b') 2 >>> ind = find_last(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None • find_first(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the first element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_first(['a', 'b', 'b', 'a'], 'b') 1 >>> ind = find_first(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None In python
find_last(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the last element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_last(['a', 'b', 'b', 'a'], 'b') 2 >>> ind = find_last(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None • find_first(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the first element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_first(['a', 'b', 'b', 'a'], 'b') 1 >>> ind = find_first(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None In python
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
Related questions
Question
find_last(my_list, x): Takes two inputs: the first being a list and the second being any type.
Returns the index of the last element of the list which is equal to the second input; if it cannot be
found, returns None instead.
>>> find_last(['a', 'b', 'b', 'a'], 'b')
2
>>> ind = find_last(['a', 'b', 'b', 'a'], 'c')
>>> print(ind)
None
• find_first(my_list, x): Takes two inputs: the first being a list and the second being any type.
Returns the index of the first element of the list which is equal to the second input; if it cannot be
found, returns None instead.
>>> find_first(['a', 'b', 'b', 'a'], 'b')
1
>>> ind = find_first(['a', 'b', 'b', 'a'], 'c')
>>> print(ind)
None
In python
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