How to print Boolean values in Python

# Print boolean values in Python

Use the print() function to print a boolean value in Python, e.g. print(my_bool).

If the value is not of type boolean, use the bool() class to convert it to a boolean and print the result, e.g. bool(0).

Copied!
my_bool = True

# ✅ print boolean value
print(my_bool)  # 👉️ True

# ✅ print boolean value in a string
print(f'is subscribed: {my_bool}')  # 👉️ is subscribed: True

# ✅ print integer representation of boolean value
print(int(True))  # 👉️ 1
print(int(False))  # 👉️ 0

# ✅ print boolean value converted to lowercase
print(f'{my_bool}'.lower())  # 👉️ true

# ✅ Convert a value to a boolean
print(bool('hello'))  # 👉️ True
print(bool(0))  # 👉️ False

We used the print() function to print boolean values.

The print() function takes one or more objects and prints them to sys.stdout.

If you have a boolean value, you can pass it directly to the print() function to print it.

Copied!
my_bool = True

print(my_bool)  # 👉️ True

print(False) # 👉️ False

Copied!
my_bool = True

# ⛔️ BAD (print always returns None)
result = print(f'is subscribed: {my_bool}')

print(result)  # 👉️ None

Instead, store the value in a variable and pass the variable to the print() function.

Copied!
my_bool = True
result = f'is subscribed: {my_bool}'

print(result)  # 👉️ is subscribed: True

If you aren't sure what type a variable stores, use the built-in type() class.

Copied!
my_bool = False
print(type(my_bool))  # 👉️ <class 'bool'>
print(isinstance(my_bool, bool))  # 👉️ True

my_str = 'hello'
print(type(my_str))  # 👉️ <class 'str'>
print(isinstance(my_str, str))  # 👉️ True

The type class returns the type of an object.

The isinstance function returns True if the passed-in object is an instance or a subclass of the passed-in class.

# Converting a value to a boolean and printing the result

If you need to convert a value to a boolean and print the result, use the bool() class.

Copied!
print(bool('hello'))  # 👉️ True

print(bool(0))  # 👉️ False

The bool class converts truthy values to True and falsy values to False.

All values that are not truthy are considered falsy. The falsy values in Python are:

• constants defined to be falsy: None and False.
• 0 (zero) of any numeric type.
• empty sequences and collections: "" (empty string), () (empty tuple), [] (empty list), {} (empty dictionary), set() (empty set), range(0) (empty range).

# Printing a boolean value in a String

If you need to print a boolean value or a variable storing a boolean value in a string, use a formatted string literal.

Copied!
my_bool = True

# ✅ print boolean value in a string
print(f'is subscribed: {my_bool}')  # 👉️ is subscribed: True

Make sure to wrap expressions in curly braces - {expression}.

# Passing multiple, comma-separated arguments to print()

Alternatively, you can pass multiple, comma-separated arguments to the print() function.

Copied!
# 👇️ is subscribed: True
print('is subscribed:', True)

# 👇️ is subscribed:True
print('is subscribed:', True, sep='')

You can set the sep keyword argument to an empty string to remove the separator.

If you need to convert a boolean value to its integer representation, use the int() class.

Copied!
print(int(True))  # 👉️ 1
print(int(False))  # 👉️ 0

The int class returns an integer object constructed from the provided number or string argument.

Conversely, if you need to convert an integer to a boolean value, use the bool() class.

Copied!
print(bool(1))  # 👉️ True
print(bool(0))  # 👉️ False

The bool() class takes a value and converts it to a boolean (True or False). If the provided value is falsy or omitted, then bool returns False, otherwise it returns True.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

• Print alternate characters in a String in Python
• Print a Dictionary in Table format in Python
• How to Print on the Same Line in Python
• How to Print a Horizontal Line in Python
• How to print Integer values in Python
• How to Print a List in Columns in Python
• Print a List without the Commas and Brackets in Python
• Using nested Loops to print a Rectangle in Python