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Numbers Assertions
In this notebook, you'll learn how to use most used Numbers assertion functions. Below are these functions:
assert_variable_almost_equals(student_variable_name, expected_value, tolerance_in_decimals=2): Checks that the student's variable instudent_variable_namematches the expected value within the given tolerance.assert_variable_almost_equals_variable(student_variable_name, expected_variable_name, tolerance_in_decimals=2, delete_afterwards=True): Checks that the student's variable instudent_variable_namematches the expected variable inexpected_variable_namewithin the given tolerance.
Load the utils.py file to use the assertion functions.
exec(open("utils.py").read())
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Student Data for Activities
In the activities, we'll use the below student data. Format of the data is name, marks, age, grade, subject.
There are total 500 students in the list, but we are showing only a few here.
# Import the data from the text file into a list
student_list = [['Gabriel', '53', '18', 'D', 'English'],
['Nora', '79', '18', 'F', 'Math'],
['Luna', '2', '18', 'A', 'English'],
['Anthony', '76', '18', 'A', 'Math'],
['Logan', '56', '17', 'D', 'History'],
['Luna', '25', '18', 'E', 'Geography'],
['Daniel', '29', '18', 'C', 'History'],
['Sarah', '92', '17', 'B', 'History'],
['Victoria', '91', '17', 'D', 'History'],
['Zoe', '47', '18', 'E', 'Geography']
...
]
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Activities
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1. Calculate the average marks of the students in English subject.
Loop through the list student_list, access the marks of the students who have English as their favorite subject, and calculate the average marks of those students. Store the average marks in the variable average_marks_english.
average_marks_english = ...Solutions:
total_marks = 0
count = 0
for student in student_list:
if student[4] == 'English':
total_marks += int(student[1])
count += 1
average_marks_english = total_marks / count
print(average_marks_english)As the expected output is a float, so we use assert_variable_almost_equals() function to assert the solution with the student variable.
Assertion:
assert_variable_almost_equals("average_marks_english", 52.0)
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2. Calculate the average marks of the students in Math subject.
Loop through the list student_list, access the marks of the students who have Math as their favorite subject, and calculate the average marks of those students. Store the average marks in the variable average_marks_math.
average_marks_math = ...Solutions:
total_marks = 0
count = 0
for student in student_list:
if student[4] == 'Math':
total_marks += int(student[1])
count += 1
average_marks_math = total_marks / count
print(average_marks_math)As the expected output is a float, so we use assert_variable_almost_equals_variable() function to assert the solution with the student variable.
Assertion:
expected_average_marks_math = 72.5
assert_variable_almost_equals_variable("average_marks_math", "expected_average_marks_math")