bool()

Converts a value to a Boolean True or False value.

Syntax

bool(object)

Standard truth testing procedures are applied to values to determine their Boolean value. Statements are True if they do not meet one or more of these criteria:

• If a False boolean value is passed.
• If None is passed.
• If a quantitative zero is passed, such as 0 or 0.0.
• If an empty sequence or mapping is passed, such as (), [], or {}.
• If Objects of Classes having bool() or len() method, returning 0 or False are passed.

Example 1

Use bool() function to return the boolean expression of the string 'True':

print(bool('True'))

# Output: True

Example 2

Use bool() function to return the boolean expression of the string 'False':

print(bool('False'))

# Output: False

Example 3

Use bool() to return the boolean expression of the integer 0: