Boolean values

Boolean values in Python are two constants True and False.

In Python, not only True and False are considered True and False values.

• True value:

  • any non-zero number

  • any non-empty string

  • any non-empty object

• False value:

  • 0

  • None

  • empty string

  • empty object

Other True and False values tend to follow the condition logically.

To check boolean value of object you can use bool:

In [2]: items = [1, 2, 3]

In [3]: empty_list = []

In [4]: bool(empty_list)
Out[4]: False

In [5]: bool(items)
Out[5]: True

In [6]: bool(0)
Out[6]: False

In [7]: bool(1)
Out[7]: True