If the second parameter exists in the first list parameter, return the index of the first occurrence of the item found in the given list. If it does not, return -1
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- Write a function list2DigitOdd() that creates and returns a list that contain all positive 2-digit odd numbers. The function call list2DigitOdd() will return a list containing 11, 13, 15, ..., 99.The function swap_list_ends in python takes one parameter, L, which is a list. The function then swaps the first and last items in L and returns the object None. Notice that since L is mutable, the changes the function makes to L are visible back in the calling program. SPECIAL CASE: If the list 'L' is empty, then the function does nothing to L and returns None. For example: Test Result L = [1, 3, 9, 2] if not(swap_list_ends(L) is None): print("Error: function should return None") print(L) [2, 3, 9, 1] L = ['super', 'awesome', 'excellent'] if not(swap_list_ends(L) is None): print("Error: function should return None") print(L) ['excellent', 'awesome', 'super'] L = [True, False] if not(swap_list_ends(L) is None): print("Error: function should return None") print(L) [False, True]Write the python function named keep_even_values. This function will have 1 parameter that will be a list of integer values. This function is to return a list that keeps the even integer values (values that are mutliples of 2) and remove any odd integer values. The order of the even integer values in the list returned by the function should match the relative ordering of those values given to the function via its parameter. For example: keep_even_values ([6, 4, 2, 5, 3, 8, 1, 7, 12, 10, 9]) ==> [6, 4, 2, 8, 12, 10] keep_even_values ([16, 42, 12]) ==> [16, 42, 12] keep_even_values ([11, 7, 123]) ==> [] Note: Sometime essay questions in Blackboard remove leading spaces on a line. Leading spaces in python code can be very important. To show the leading spaces, you can type in the up-arrow character, ^, (shift-6) at the start of the line instead of using the space character and the grader will know you mean a space character. This is only needed for spaces at the beginning of a line of…
- In Python Use the Design Recipe to write a function has_duplicates, which consumes a list and returns True if the list has any duplicate entries, False otherwise. Your function should return False if the list is emptyWrite a Python code for the given functions and definitions: Task1 Given function: def isEmpty(self) Pre-condition: None. Post-condition: Returns true if a list is empty. Otherwise, returns false. Task2 Given function: def clear(self) Pre-condition: The list is not empty. Post-condition: Removes all the elements from a list.In Python use the Design Recipe to write a function, count_odds, that consumes a list and two integers, lower_bound and upper_bound, and returns the number of all the odd integers in the list that are between lower_bound and upper_bound (inclusive of both lower_bound and upper_bound). Include a docstring!
- The function last_words in python takes one parameter, fname, the name of a text file, and returns a list containing the last word from each line of the file. For example, if the file contents are: apples are red bananas are yellow limes are green then the list ["red", "yellow", "green"] should be returned. NOTE: You may assume the file will contain no blank lines. BIG HINT: If line is a string representing a line of text (inside a for loop!), then L = line.split() creates a list of the words in the line. For example: Test Result L = last_words("wordlist1.txt") print(L) ['happy', 'sad', 'angsty', 'euphoric', 'maudlin']Code in python Given a list, L, the function front_two creates a new list of length 2 out of the first two items in L as follows: In the new list, the second item becomes the first item, and the first item becomes the second. If L contains only one item, the first item in the new list should be the value None. If L is empty, both items in the new list should be value None. The function returns the new list. For example: Test Result L = ['a', 'b', 'c', 'd'] print(front_two(L)) ['b', 'a'] L = [] print(front_two(L)) [None, None] L = [5, 2] print(front_two(L)) [2, 5] L = [7] print(front_two(L)) [None, 7]Python question, please use a docstring and have comments throughout the code Write a function makeAllStrings() that takes a 2D list (a list of lists) as a parameter and modifies it. It changes the list so that all non-string objects in the list are replaced with an empty string. Strings in the list are left unchanged, so that a list containing only strings would not be modified. The empty list should also not be modified. The function returns the number of changes made by the function in the list. Recall that you can determine if a variable var holds a string by writing type(var) == str. Please write the condition you want and not the opposite of it. Use nested for loop pattern and if-else. Remember to return the count not the list. Remember you can change the value of an item in a list by using the index operator. Below are some sample executions of the function. Use the nested loop and an if-elif in the solution. Don’t forget to include the docstring and comments. Copy and paste or…
- In Python Use the Design Recipe to write a function bools_2_str, which consumes a list of booleans and returns a string of the same length as the list. Where the list has True, the string should have 'X', and where the list has False, the string should have ' ' (i.e., a single space).Create a function that compares two lists of integer values to determine if they are identical (i.e. contain the same values). If two lists are dissimilar, the method must give their maximum values.Write a function called count_superheroes () that takes a list (containing the strings 'Spiderman' and 'Hulk') as a parameter and returns the string 'Spiderman' if Spiderman appears more times in the list than the Hulk; returns the string 'Hulk' if the Hulk appears more times in the list than Spiderman; and returns 'even' otherwise. You MUST use a loop in your solution. You must not use string methods or list methods in your solution. If you didn't complete part a), you may assume that you did in order to answer this question. For example: If the list being passed as an argument to function count_superheroes () is: superheros ['Spiderman', 'Hulk', 'Spiderman', 'Hulk', 'Spiderman', 'Spiderman', 'Hulk'] the function will return the string 'Spiderman' (i.e. the string 'Spiderman' appears in the list more times than the 'Hulk'). =