• is named correctly and has the correct parameters and return type • calculates and returns the correct value (or prints the correct output) The zyLabs auto-grader runs main.py as a script. In main.py, the line if _name__ == " __main__': is used to separate the main code from the functions' code so that each function can be unit tested. Enter statements to be run as the main code under if ___name__ == '__main__':. Indent the statements so the statements belong to the if block. Refer to the subsection Importing modules and executing scripts under section Module basics for more information about running a program as a script.

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter6: Modularity Using Functions
Section6.2: Returning A Single Value
Problem 13E
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Auto-graded programming assignments may use a Unit test to test small parts of a program. Unlike a Compare output test,
which evaluates your program's output for specific input values, a Unit test evaluates individual functions to determines if
each function:
. is named correctly and has the correct parameters and return type
• calculates and returns the correct value (or prints the correct output)
name
The zyLabs auto-grader runs main.py as a script. In main.py, the line if
'__main__': is used to
separate the main code from the functions' code so that each function can be unit tested. Enter statements to be run as the
main code under if _name__ == '____main__':. Indent the statements so the statements belong to the if block. Refer
to the subsection Importing modules and executing scripts under section Module basics for more information about running
a program as a script.
Note: Do not remove if
name
program produces the correct output.
This example lab uses multiple unit tests to test the kilo_to_pounds() function.
Complete a program that takes a weight in kilograms as input, converts the weight to pounds, and then outputs the weight
in pounds. 1 kilogram = 2.204 pounds (lbs).
10
The program must define the following function:
def kilo_to_pounds (kilos) - take kilos as a parameter, convert kilos from kilograms to pounds, and return the
weight in pounds.
Ex: If the input of the program is:
22.040 lbs
I
10 is passed to kilo_to_pounds() and the output of the program is:
__main__': from the code. Otherwise, the unit tests will fail even though the
The program below has an error in the kilo_to_pounds() function.
1. Try submitting the program for grading (click "Submit mode", then "Submit for grading"). Notice that the first two test
cases fail, but the third test case passes. The first test case fails because the program outputs the result from the
kilo_to_pounds() function, which has an error. The second test case uses a Unit test to test the kilo_to_pounds()
function, which fails.
2. Change the kilo_to_pounds() function to multiply the variable kilos by 2.204, instead of dividing. The return statement
should be return (kilos * 2.204). Submit again. Now the test cases should all pass.
LAB
ACTIVITY
Note: A common error is to mistype a function name with the incorrect capitalization. Function names are case sensitive, so
if a lab program asks for a kilo_to_pounds() function, a kilo_To_Pounds() function that works for you in "Develop mode" will
result in a failed unit test. The unit test will not be able to find kilo_to_pounds().
461710.3116374.qx3zqy7
1 def kilo_to_pounds(kilos):
2
7.33.1: Lab training: Unit tests to evaluate your program
은 물
# This statement intentionally has an error.
return (kilos / 2.204)
pounds
11 printf' {pounds:.3f} lbs'
=
3
4
5
6 # Main part of the program starts here. Do not remove the line below.
7 if __name__
'__main__':
8
kilos float(input())
9
10
main.py
kilo_to_pounds (kilos)
0/3
Load default template...
Transcribed Image Text:Auto-graded programming assignments may use a Unit test to test small parts of a program. Unlike a Compare output test, which evaluates your program's output for specific input values, a Unit test evaluates individual functions to determines if each function: . is named correctly and has the correct parameters and return type • calculates and returns the correct value (or prints the correct output) name The zyLabs auto-grader runs main.py as a script. In main.py, the line if '__main__': is used to separate the main code from the functions' code so that each function can be unit tested. Enter statements to be run as the main code under if _name__ == '____main__':. Indent the statements so the statements belong to the if block. Refer to the subsection Importing modules and executing scripts under section Module basics for more information about running a program as a script. Note: Do not remove if name program produces the correct output. This example lab uses multiple unit tests to test the kilo_to_pounds() function. Complete a program that takes a weight in kilograms as input, converts the weight to pounds, and then outputs the weight in pounds. 1 kilogram = 2.204 pounds (lbs). 10 The program must define the following function: def kilo_to_pounds (kilos) - take kilos as a parameter, convert kilos from kilograms to pounds, and return the weight in pounds. Ex: If the input of the program is: 22.040 lbs I 10 is passed to kilo_to_pounds() and the output of the program is: __main__': from the code. Otherwise, the unit tests will fail even though the The program below has an error in the kilo_to_pounds() function. 1. Try submitting the program for grading (click "Submit mode", then "Submit for grading"). Notice that the first two test cases fail, but the third test case passes. The first test case fails because the program outputs the result from the kilo_to_pounds() function, which has an error. The second test case uses a Unit test to test the kilo_to_pounds() function, which fails. 2. Change the kilo_to_pounds() function to multiply the variable kilos by 2.204, instead of dividing. The return statement should be return (kilos * 2.204). Submit again. Now the test cases should all pass. LAB ACTIVITY Note: A common error is to mistype a function name with the incorrect capitalization. Function names are case sensitive, so if a lab program asks for a kilo_to_pounds() function, a kilo_To_Pounds() function that works for you in "Develop mode" will result in a failed unit test. The unit test will not be able to find kilo_to_pounds(). 461710.3116374.qx3zqy7 1 def kilo_to_pounds(kilos): 2 7.33.1: Lab training: Unit tests to evaluate your program 은 물 # This statement intentionally has an error. return (kilos / 2.204) pounds 11 printf' {pounds:.3f} lbs' = 3 4 5 6 # Main part of the program starts here. Do not remove the line below. 7 if __name__ '__main__': 8 kilos float(input()) 9 10 main.py kilo_to_pounds (kilos) 0/3 Load default template...
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