freeCodeCamp/guide/english/python/bool-function/index.md

title
Python Bool Function

bool() is a built-in function in Python 3. This function returns a Boolean value, i.e. True or False. It takes one argument, x.

Arguments

It takes one argument, x. x is converted using the standard Truth Testing Procedure.

Return Value

If x is false or omitted, this returns False; otherwise it returns True.

Code Sample

print(bool(4 > 2)) # Returns True as 4 is greater than 2
print(bool(4 < 2)) # Returns False as 4 is not less than 2
print(bool(4 == 4)) # Returns True as 4 is equal to 4
print(bool(4 != 4)) # Returns False as 4 is equal to 4 so inequality doesn't holds
print(bool(4)) # Returns True as 4 is a non-zero value
print(bool(-4)) # Returns True as -4 is a non-zero value
print(bool(0)) # Returns False as it is a zero value
print(bool('dskl')) # Returns True as the string is a non-zero value
print(bool([1, 2, 3])) # Returns True as the list is a non-zero value
print(bool((2,3,4))) # Returns True as tuple is a non-zero value
print(bool([])) # Returns False as list is empty and equal to 0 according to truth value testing

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