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Impara Visualizing Test Results with Matplotlib | Analyzing and Visualizing Test Data
Python for QA Engineers

bookVisualizing Test Results with Matplotlib

When you need to communicate the results of your QA efforts, visual representations can be much more effective than raw numbers or tables. The matplotlib library is a powerful tool in Python that helps you create charts and graphs to illustrate test outcomes, making it easier for teams to spot trends, identify issues, and share insights with stakeholders. In the context of QA reporting, matplotlib allows you to quickly turn test result data into visual formats that are easy to understand at a glance.

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import matplotlib.pyplot as plt # Sample data: number of passed and failed tests num_pass = 75 num_fail = 25 # Create a bar chart plt.bar(['PASS', 'FAIL'], [num_pass, num_fail], color=['green', 'red']) plt.title('Test Results Summary') plt.xlabel('Test Status') plt.ylabel('Number of Tests') plt.show()
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The bar chart you just created provides a clear comparison between the number of passed and failed tests. By visualizing this data, QA teams can quickly assess the overall health of the test suite. A higher bar for passes indicates good test stability, while a significant number of failures may signal issues that need immediate attention. Such charts make it easier to communicate the current status of testing efforts to both technical and non-technical audiences, helping drive informed decisions and prioritization.

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import matplotlib.pyplot as plt # Sample data: test execution times (in seconds) for a sequence of test runs test_runs = [1, 2, 3, 4, 5] execution_times = [12.5, 11.8, 13.2, 12.1, 11.9] # Create a line chart plt.plot(test_runs, execution_times, marker='o') plt.title('Test Execution Times Over Runs') plt.xlabel('Test Run') plt.ylabel('Execution Time (seconds)') plt.grid(True) plt.show()
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1. Why are visualizations useful in QA reporting?

2. Which matplotlib function is used to create a bar chart?

3. Fill in the blank to create a bar chart that visualizes the number of passed and failed tests using matplotlib.

question mark

Why are visualizations useful in QA reporting?

Select all correct answers

question mark

Which matplotlib function is used to create a bar chart?

Select the correct answer

question-icon

Fill in the blank to create a bar chart that visualizes the number of passed and failed tests using matplotlib.

(['PASS', 'FAIL'], [num_pass, num_fail])
Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 2. Capitolo 4

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bookVisualizing Test Results with Matplotlib

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When you need to communicate the results of your QA efforts, visual representations can be much more effective than raw numbers or tables. The matplotlib library is a powerful tool in Python that helps you create charts and graphs to illustrate test outcomes, making it easier for teams to spot trends, identify issues, and share insights with stakeholders. In the context of QA reporting, matplotlib allows you to quickly turn test result data into visual formats that are easy to understand at a glance.

123456789101112
import matplotlib.pyplot as plt # Sample data: number of passed and failed tests num_pass = 75 num_fail = 25 # Create a bar chart plt.bar(['PASS', 'FAIL'], [num_pass, num_fail], color=['green', 'red']) plt.title('Test Results Summary') plt.xlabel('Test Status') plt.ylabel('Number of Tests') plt.show()
copy

The bar chart you just created provides a clear comparison between the number of passed and failed tests. By visualizing this data, QA teams can quickly assess the overall health of the test suite. A higher bar for passes indicates good test stability, while a significant number of failures may signal issues that need immediate attention. Such charts make it easier to communicate the current status of testing efforts to both technical and non-technical audiences, helping drive informed decisions and prioritization.

12345678910111213
import matplotlib.pyplot as plt # Sample data: test execution times (in seconds) for a sequence of test runs test_runs = [1, 2, 3, 4, 5] execution_times = [12.5, 11.8, 13.2, 12.1, 11.9] # Create a line chart plt.plot(test_runs, execution_times, marker='o') plt.title('Test Execution Times Over Runs') plt.xlabel('Test Run') plt.ylabel('Execution Time (seconds)') plt.grid(True) plt.show()
copy

1. Why are visualizations useful in QA reporting?

2. Which matplotlib function is used to create a bar chart?

3. Fill in the blank to create a bar chart that visualizes the number of passed and failed tests using matplotlib.

question mark

Why are visualizations useful in QA reporting?

Select all correct answers

question mark

Which matplotlib function is used to create a bar chart?

Select the correct answer

question-icon

Fill in the blank to create a bar chart that visualizes the number of passed and failed tests using matplotlib.

(['PASS', 'FAIL'], [num_pass, num_fail])
Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 2. Capitolo 4
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