9.18. Write Code Questions

Write a function add_to_new_list that takes in a list of strings, lst, as a parameter and creates a new list with the length of lst and the first element of lst three times. For example, add_to_new_list(["1","2","3"]) would return [3, '111'].

def add_to_new_list(lst): # write code here ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(add_to_new_list(['1','2','3']), [3, '111'], "add_to_new_list(['1','2','3'])") self.assertEqual(add_to_new_list(['0','0','0','0']), [4, '000'], "add_to_new_list(['0','0','0','0'])") self.assertEqual(add_to_new_list(['10.2','0.0','100','-2']), [4, '10.210.210.2'], "add_to_new_list(['10.2','0.0','100','-2'])") myTests().main()

Write a function add_to_new_list that takes in a list of strings, lst, as a parameter and creates a new list with the length of lst and the first element of lst three times. For example, add_to_new_list(["1","2","3"]) would return [3, '111'].

def add_to_new_list(lst): new_list = [] new_list.append(len(lst)) new_list.append(lst[0] * 3) return new_list ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(add_to_new_list(['1','2','3']), [3, '111'], "add_to_new_list(['1','2','3'])") self.assertEqual(add_to_new_list(['0','0','0','0']), [4, '000'], "add_to_new_list(['0','0','0','0'])") self.assertEqual(add_to_new_list(['10.2','0.0','100','-2']), [4, '10.210.210.2'], "add_to_new_list(['10.2','0.0','100','-2'])") myTests().main()

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Selecting from: list_writeItemsq_v2_ac, list_writeItemsq_v2_pp

Write a function average that takes in a list of integers, aList, as a parameter and returns the average of all of the integers, rounded to one decimal place. For example, average([99, 100, 74, 63, 100, 100]) would return 89.3.

def average(aList): # write code here ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertAlmostEqual(average([99, 100, 74, 63, 100, 100]), 89.3, 1, "average([99, 100, 74, 63, 100, 100])") self.assertAlmostEqual(average([0, 2, -3, 1.2, 2000]), 400.0, 1, "average([0, 2, -3, 1.2, 2000])") self.assertAlmostEqual(average([-2]), -2.0, 1, "average([-2])") myTests().main()

Write a function average that takes in a list of integers, aList, as a parameter and returns the average of all of the integers, rounded to one decimal place. For example, average([99, 100, 74, 63, 100, 100]) would return 89.33.

def average(aList): sum = 0 for num in aList: sum += num avg = round(sum / len(aList),2) return avg ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertAlmostEqual(average([99, 100, 74, 63, 100, 100]), 89.3, 1, "average([99, 100, 74, 63, 100, 100])") self.assertAlmostEqual(average([0, 2, -3, 1.2, 2000]), 400.0, 1, "average([0, 2, -3, 1.2, 2000])") self.assertAlmostEqual(average([-2]), -2.0, 1, "average([-2])") myTests().main()

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Selecting from: list_write23_ac, list_write23_pp

Write a function capitalize that takes in a list of lists of strings, lst, and makes the first letter of each element capitalized and adds it to a new list and returns that new list. For example, capitalize([["hi"],["hello", "hey"]]) would return ['Hi', 'Hello', 'Hey'].

def capitalize(lst): # write code here ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(capitalize([['hi'],['hello', 'hey']]), ['Hi', 'Hello', 'Hey'], "capitalize([['hi'],['hello', 'hey']])") self.assertEqual(capitalize([['HI'],['HELLO', 'HEY']]), ['Hi', 'Hello', 'Hey'], "capitalize([['HI'],['HELLO', 'HEY']])") self.assertEqual(capitalize([['go', 'blue'],['python', 'IS', 'The', 'Best']]), ['Go', 'Blue', 'Python', 'Is', 'The', 'Best'], "capitalize([['go', 'blue'],['python', 'IS', 'The', 'Best']])") myTests().main()

Write a function capitalize that takes in a list of lists of strings, lst, and makes the first letter of each element capitalized and adds it to a new list and returns that new list. For example, capitalize([["hi"],["hello", "hey"]]) would return ['Hi', 'Hello', 'Hey'].

def capitalize(lst): new_list = [] for i in lst: for j in i: new_list.append(j.capitalize()) return new_list ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(capitalize([['hi'],['hello', 'hey']]), ['Hi', 'Hello', 'Hey'], "capitalize([['hi'],['hello', 'hey']])") self.assertEqual(capitalize([['HI'],['HELLO', 'HEY']]), ['Hi', 'Hello', 'Hey'], "capitalize([['HI'],['HELLO', 'HEY']])") self.assertEqual(capitalize([['go', 'blue'],['python', 'IS', 'The', 'Best']]), ['Go', 'Blue', 'Python', 'Is', 'The', 'Best'], "capitalize([['go', 'blue'],['python', 'IS', 'The', 'Best']])") myTests().main()

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Selecting from: list_write5_ac, list_write5_pp

Write a function chop that takes a list, lst, and modifies it, removing the first and last elements. For example, chop([1,2,3,4,5] should return [2,3,4].

def chop(lst): # write code here ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(chop([1,2,3,4,5]),[2,3,4],"chop([1,2,3,4,5])") self.assertEqual(chop([1,3,5,7,9,10]),[3,5,7,9],"chop([1,3,5,7,9,10])") self.assertEqual(chop([2,9]),[],"chop([2,9])") myTests().main()

Write a function chop that takes a list, lst, and modifies it, removing the first and last elements. For example, chop([1,2,3,4,5] should return [2,3,4].

def chop(lst): lst.pop(0) lst.pop(-1) return(lst) ===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(chop([1,2,3,4,5]),[2,3,4],"chop([1,2,3,4,5])") self.assertEqual(chop([1,3,5,7,9,10]),[3,5,7,9],"chop([1,3,5,7,9,10])") self.assertEqual(chop([2,9]),[],"chop([2,9])") myTests().main()

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Selecting from: list_writeReverse_ac, list_writeReverse_pp

Write a function sumUntilEven that takes in one parameter, lst, and returns the sum of all the elements in the lst up to but not including the first even number. For example, sumUntilEven([1,2,3,4,5] should return 1 and sumUntilEven([1,3,5,7,9] should return 25.

def sumUntilEven(lst): # write code here ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(sumUntilEven([1,2,3,4,5]),1,"sumUntilEven([1,2,3,4,5])") self.assertEqual(sumUntilEven([1,3,5,7,9]),25,"sumUntilEven([1,3,5,7,9])") self.assertEqual(sumUntilEven([2,4,6,7,9]),0,"sumUntilEven([2,4,6,7,9])") myTests().main()

Write a function called sumUntilEven that takes in one parameter, lst, and returns the sum of all the elements in the lst up to but not including the first even number. For example, sumUntilEven([1,2,3,4,5] should return 1 and sumUntilEven([1,3,5,7,9] should return 25.

def sumUntilEven(lst): total = 0 element = 0 while element < len(lst) and lst[element] % 2 != 0: total = total + lst[element] element += 1 return total ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(sumUntilEven([1,2,3,4,5]),1,"sumUntilEven([1,2,3,4,5])") self.assertEqual(sumUntilEven([1,3,5,7,9]),25,"sumUntilEven([1,3,5,7,9])") self.assertEqual(sumUntilEven([2,4,6,7,9]),0,"sumUntilEven([2,4,6,7,9])") myTests().main()

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Selecting from: list_sortByLen_ac, list_sortByLen_pp

Write a function combine(names, ages) that takes in two lists, names and ages and returns a list of strings in the format "Name: name, age: age". For example, combine(["Claire", "Jennifer"],[23, 19]) would return ["Name: Claire, age: 23", "Name: Jennfier, age: 19"].

def combine(names, ages): ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(combine(["Mark", "Mary", "Sue"], [59, 60, 61]), ["Name: Mark, age: 59", "Name: Mary, age: 60", "Name: Sue, age: 61"], 'combine(["Mark", "Mary", "Sue"])') self.assertEqual(combine(["Iman"], [28]), ["Name: Iman, age: 28"], 'combine(["Iman"], [28])') self.assertEqual(combine(["Pedro", "Mez"], [24, 26]), ["Name: Pedro, age: 24", "Name: Mez, age: 26"], 'combine(["Pedro", "Mez"], [24, 26])') self.assertEqual(combine(["Claire", "Jennifer"], [23, 19]), ["Name: Claire, age: 23", "Name: Jennifer, age: 19"], 'combine(["Claire", "Jennifer"], [23, 19])') myTests().main()

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