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8.14. Chapter Assessment

Check your understanding

rainfall_mi is a string that contains the average number of inches of rainfall in Michigan for every month (in inches) with every month separated by a comma. Write code to compute the number of months that have more than 3 inches of rainfall. Store the result in the variable num_rainy_months. In other words, count the number of items with values > 3.0.

Hard-coded answers will receive no credit.

rainfall_mi = "1.65, 1.46, 2.05, 3.03, 3.35, 3.46, 2.83, 3.23, 3.5, 2.52, 2.8, 1.85" ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertIn('for', self.getEditorText(), "Testing that your code has a for loop (Don't worry about actual and expected values).") self.assertEqual(num_rainy_months, 5, "Testing that num_rainy_months has the right value") myTests().main()

The variable sentence stores a string. Write code to determine how many words in sentence start and end with the same letter, including one-letter words. Store the result in the variable same_letter_count.

Hard-coded answers will receive no credit.

sentence = "students flock to the arb for a variety of outdoor activities such as jogging and picnicking" # Write your code here. ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(same_letter_count, 2, "Checking that same_letter_count has the correct value") self.assertIn('for ', self.getEditorText(), "Testing that your code has a for loop") myTests().main()

Write code to count the number of strings in list items that have the character w in it. Assign that number to the variable acc_num.

HINT 1: Use the accumulation pattern!

HINT 2: the in operator checks whether a substring is present in a string.

Hard-coded answers will receive no credit.

items = ["whirring", "wow!", "calendar", "wry", "glass", "", "llama","tumultuous","owing"] ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertIn(' in ', self.getEditorText(), "Testing that you are using the in operator.") self.assertEqual(acc_num, 4, "Testing that acc_num has been set to the number of strings that have 'w' in them.") myTests().main()

Write code that counts the number of words in sentence that contain either an “a” or an “e”. Store the result in the variable num_a_or_e.

Note 1: be sure to not double-count words that contain both an a and an e.

HINT 1: Use the in operator.

HINT 2: You can either use or or elif.

Hard-coded answers will receive no credit.

sentence = "python is a high level general purpose programming language that can be applied to many different classes of problems." ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertIn(' in ', self.getEditorText(), "Testing that you are using the in operator.") self.assertEqual(num_a_or_e, 14, "Testing that num_a_or_e has been set to the correct number.") myTests().main()

Write code that will count the number of vowels in the sentence s and assign the result to the variable num_vowels. For this problem, vowels are only a, e, i, o, and u. Hint: use the in operator with vowels.

s = "singing in the rain and playing in the rain are two entirely different situations but both can be fun" vowels = ['a','e','i','o','u'] # Write your code here. ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(num_vowels, 32, "testing whether num_vowels is set correctly") def testOneA(self): self.assertIn('for', self.getEditorText(), "Testing that you are using a for loop.") myTests().main()

Create one conditional so that if “Friendly” is in w, then “Friendly is here!” should be assigned to the variable wrd. If it’s not, check if “Friend” is in w. If so, the string “Friend is here!” should be assigned to the variable wrd, otherwise “No variation of friend is in here.” should be assigned to the variable wrd. (Also consider: does the order of your conditional statements matter for this problem? Why?)

w = "Friendship is a wonderful human experience!" ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(wrd, "Friend is here!", "Testing the value of wrd") self.assertIn("else", self.getEditorText(), "Checking that you used an else clause.") self.assertIn("elif", self.getEditorText(), "Checking that you used an elif clause.") myTests().main()

We have written conditionals for you to use. Create the variable x and assign it some integer so that at the end of the code, output will be assigned the string "Consistently working".

if x >= 10: output = "working" else: output = "Still working" if x > 12: output = "Always working" elif x < 7: output = "Forever working" else: output = "Consistently working" ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(output, "Consistently working", "Testing the value of output") def testTwo(self): self.assertIn(x, [7,8,9,10,11,12], "Testing that x was assigned a correct number" ) myTests().main()

Write code so that if "STATS 250" is in the list schedule, then the string "You could be in Information Science!" is assigned to the variable resp. Otherwise, the string "That's too bad." should be assigned to the variable resp.

schedule = ["SI 106", "STATS 250", "SI 110", "ENGLISH 124/125"] ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(resp, "You could be in Information Science!", "Testing the value of resp given the schedule list provided.") self.assertIn("if", self.getEditorText(), "Testing that you used an if clause.") myTests().main()

Create the variable z whose value is 30. Write code to see if z is greater than y. If so, add 5 to y’s value, otherwise do nothing. Then, multiply z and y, and assign the resulting value to the variable x.

y = 22 ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(x, 810, "Testing the value of x") def testTwo(self): self.assertEqual(z, 30, "Testing the value of z.") myTests().main()

For each string in wrd_lst, find the number of characters in the string. If the number of characters is less than 6, add 1 to accum so that in the end, accum will contain an integer representing the total number of words in the list that have fewer than 6 characters.

wrd_lst = ["Hello", "activecode", "Java", "C#", "Python", "HTML and CSS", "Javascript", "Swift", "php"] ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(accum, 5, "Testing the value of accum") self.assertIn('for ', self.getEditorText(), "Testing that your code has a for loop") myTests().main()

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