Example: Convert the list
[True, True, False] using
- The logical “AND” operation to
True and True and False = False,
- The logical “OR” operation to
True or True or False = True, and
- The logical “NOT” operation to
[not True, not True, not False] = [False, False, True].
- To perform logical “AND”, use the built-in Python function
- To perform logical “OR”, use the built-in Python function
- To perform logical “NOT”, use a list comprehension statement
[not x for x in list].
Here’s the solution for our three examples:
lst = [True, True, False] # Logical "AND" print(all(lst)) # False # Logical "OR" print(any(lst)) # True # Logical "NOT" print([not x for x in lst]) # [False, False, True]
This way, you can combine an arbitrary iterable of Booleans into a single Boolean value.
Puzzle: Guess the output of this interactive code snippet—and run it to check if you were correct!
The challenge in the puzzle is to know that Python comes with implicit Boolean type conversion: every object has an associated Boolean value. Per convention, all objects are True except “empty” or “zero” objects such as
0.0. Thus, the result of the function call
all([True, True, 0]) is
Where to Go From Here?
Enough theory. Let’s get some practice!
Coders get paid six figures and more because they can solve problems more effectively using machine intelligence and automation. To become more successful in coding, solve more real problems for real people. That’s how you polish the skills you really need in practice. After all, what’s the use of learning theory that nobody ever needs?
You build high-value coding skills by working on practical coding projects!
Do you want to stop learning with toy projects and focus on practical code projects that earn you money and solve real problems for people?
If your answer is YES!, consider becoming a Python freelance developer! It’s the best way of approaching the task of improving your Python skills—even if you are a complete beginner.
Join my free webinar “How to Build Your High-Income Skill Python” and watch how I grew my coding business online and how you can, too—from the comfort of your own home.
While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students.
To help students reach higher levels of Python success, he founded the programming education website Finxter.com. He’s author of the popular programming book Python One-Liners (NoStarch 2020), coauthor of the Coffee Break Python series of self-published books, computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide.
His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here.