Please answer it in PythonWrite a function indice_de that takes as an argument an integer (supposedly even) and a list, and returns the index to which this integer appears in the list. If the integer does not appear, the function will return None. It is assumed here for simplicity that the integer searched for does not appear several times in the list. Hint: if the for e in list loop doesn't suit you, remember that you can make a for + range or a while. ..Example: indice_de(12, [4, 7, 12, 0, 21, 5]) return => 2 (because 12 is placed at index 2), and indice_de(6, [4, 7, 12, 0, 21, 5]) return => None.Write a function trouve_premier_pair that takes a list as an argument and returns the even integer that appears first in the list. If the list does not contain an even integer, the function will return None.Example: trouve_premier_pair([1, 15, 4, 7, 12, 3]) return =>4and trouve_premier_pair([1, 17, 7]) return =>None. Write a function extrait_even that takes as an argument a list l1 and returns the list obtained from l1 keeping only the even integers (and without changing their order). Be careful, l1 must not be modified by the function.Example: extrait_even([4, 7, 12, 0, 3]) return => [4, 12, 0] andextrait_even([21, 17, 3]) return => [ ].

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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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Please answer it in Python

Write a function indice_de that takes as an argument an integer (supposedly even) and a list, and returns the index to which this integer appears in the list. If the integer does not appear, the function will return None. It is assumed here for simplicity that the integer searched for does not appear several times in the list. Hint: if the for e in list loop doesn't suit you, remember that you can make a for + range or a while. ..

Example: indice_de(12, [4, 7, 12, 0, 21, 5]) return => 2 (because 12 is placed at index 2), and indice_de(6, [4, 7, 12, 0, 21, 5]) return => None.

Write a function trouve_premier_pair that takes a list as an argument and returns the even integer that appears first in the list. If the list does not contain an even integer, the function will return None.

Example: trouve_premier_pair([1, 15, 4, 7, 12, 3]) return =>4

and trouve_premier_pair([1, 17, 7]) return =>None.

Write a function extrait_even that takes as an argument a list l1 and returns the list obtained from l1 keeping only the even integers (and without changing their order). Be careful, l1 must not be modified by the function.

Example: extrait_even([4, 7, 12, 0, 3]) return => [4, 12, 0] and

extrait_even([21, 17, 3]) return => [ ].

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