32 lines
1.5 KiB
Markdown
32 lines
1.5 KiB
Markdown
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---
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title: Python Bool Function
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localeTitle: Função Python Bool
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---
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`bool()` é uma função interna do Python 3. Essa função retorna um valor booleano, ou seja, True ou False. Leva um argumento, `x` .
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## Argumentos
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Leva um argumento, `x` . `x` é convertido usando o [procedimento](https://docs.python.org/3/library/stdtypes.html#truth) padrão de [teste da verdade](https://docs.python.org/3/library/stdtypes.html#truth) .
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## Valor de retorno
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Se `x` for falso ou omitido, isso retornará `False` ; caso contrário, retorna `True` .
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## Amostra de código
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```
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print(bool(4 > 2)) # Returns True as 4 is greater than 2
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print(bool(4 < 2)) # Returns False as 4 is not less than 2
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print(bool(4 == 4)) # Returns True as 4 is equal to 4
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print(bool(4 != 4)) # Returns False as 4 is equal to 4 so inequality doesn't holds
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print(bool(4)) # Returns True as 4 is a non-zero value
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print(bool(-4)) # Returns True as -4 is a non-zero value
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print(bool(0)) # Returns False as it is a zero value
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print(bool('dskl')) # Returns True as the string is a non-zero value
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print(bool([1, 2, 3])) # Returns True as the list is a non-zero value
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print(bool((2,3,4))) # Returns True as tuple is a non-zero value
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print(bool([])) # Returns False as list is empty and equal to 0 according to truth value testing
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```
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 [Executar código](https://repl.it/CVCS/2)
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[Documentos oficiais](https://docs.python.org/3/library/functions.html#bool)
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