mattmakai · mattmakai · Nov 16, 2019 · Nov 14, 2019
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+title: Basic Data Types in Python 3: Booleans
+slug: python-basic-data-types-booleans
+meta: Learn to use boolean (true and false) values in your Python 3 code
+category: post
+date: 2019-11-15
+modified: 2019-11-15
+newsletter: False
+headerimage: /img/191115-python-basic-data-types-booleans/header.jpg
+headeralt: Learn basic Python data types in TwilioQuest 3 - Booleans
+author: Kevin Whinnery
+authorlink: https://www.twilio.com/quest
+
+Welcome back to our ongoing series of blog posts on basic data types in Python 3!
+Last time, we explored the functionality of
+[strings](/blog/python-basic-data-types-strings.html). Today, we dive in to
+another key data type - booleans. Booleans (and "boolean logic") are an 
+important concept in programming, representing the concept of "true" and "false".
+
+If you're learning Python, you might also want to
+[check out TwilioQuest 3](https://www.twilio.com/quest/download).
+You'll learn about basic data types like the boolean, and much more about 
+Python programming.
+
+Ready to learn how to use booleans in Python 3? Let's get started!
+
+## Booleans in Python 3
+
+[Booleans](https://docs.python.org/3/library/stdtypes.html#boolean-operations-and-or-not)
+are a concept that exists in every programming language. A boolean represents
+the idea of "true" or "false". When you are writing a program, there
+are often circumstances where you want to execute different code in different
+situations. Booleans enable our code to do just that.
+
+You can declare a boolean value in your code using the keywords `True` and 
+`False` (note the uppercase). The following code would create two boolean
+values and assign them to variables.
+
+```python
+mullet_looks_good = False
+python_is_fun = True
+```
+
+More commonly, a boolean value is returned as a result of some kind of
+comparison. The following code example would store a boolean value of `False`
+in the `have_same_name` variable after using the 
+[equality comparison operator](https://docs.python.org/3/library/stdtypes.html#comparisons),
+the `==` symbol.
+
+```python
+my_name = "Wammu"
+your_name = "Kars"
+
+have_same_name = my_name == your_name
+```
+
+### Boolean logic
+
+Booleans are used in your code to make it behave differently based on current
+conditions within your program. You can use boolean values and comparisons in 
+conjunction with the `if`, `elif`, and `else` keyoards as one means to achieve 
+this.
+
+```python
+my_age = 10
+
+if my_age >= 100:
+  print("One hundred years old! Very impressive.")
+elif my_age <= 3:
+  print("Awwww. Just a baby.")
+else:
+  print("Ah - a very fine age indeed")
+```
+
+In addition to testing for truth, you can also check if conditions are not
+true using the `not` keyword.
+
+```python
+favorite_team = "Vikings"
+
+if not favorite_team == "Vikings":
+  print("Oh - how unfortunate.")
+else:
+  print("Skol, Vikings!")
+```
+
+### More complex boolean logic
+
+Sometimes you will need to evaluate multiple conditions in your boolean logic.
+For this purpose, you'll combine the `and` and `or` keywords. The `and` keyword
+compares two boolean values and returns `True` if both are true. The `or` keyword
+compares two values and returns `True` if any of the statements are true.
+
+Let's look at an example. That uses the `in` keyword to see if a string is
+inside a **list** of values (we'll cover lists in a future article).
+
+```python
+favs = ["Donatello", "Raphael"]
+
+if "Michelangelo" in favs and "Donatello" in favs:
+  print("Those are my favorite ninja turtles too!")
+elif "Michelangelo" in favs or "Donatello" in favs:
+  print("Well, one out of two isn't bad...")
+else:
+  print("Huh - not what I would have chosen.")
+```
+
+## Wrapping up
+
+Booleans are an important tool in any programming language. Using boolean logic,
+your code can react to data inside your program, and carry out different
+instructions under different circumstances. Hopefully, you've learned a bit 
+about how to work with booleans in Python 3! Stay tuned for more blog posts in 
+this series to learn more about basic data types like strings, numbers, 
+booleans, lists, and dictionaries.
+
+Also, be sure to 
+[download and play TwilioQuest 3](https://www.twilio.com/quest/download)
+to learn even more about Python! 
diff --git a/static/img/191115-python-basic-data-types-booleans/header.jpg b/static/img/191115-python-basic-data-types-booleans/header.jpg
diff --git a/theme/templates/blog/python-basic-data-types-booleans.html b/theme/templates/blog/python-basic-data-types-booleans.html
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+<a href="https://www.twilio.com/quest/download" class="lgi">Learn Data Types in TwilioQuest {% include "blog/external-link.html" %}</a>
+<a href="/introduction.html" class="lgi">Introduction</a>
+<a href="/learning-programming.html" class="lgi">Learning Programming</a>
+<a href="/source-control.html" class="lgi">Source control</a>