CODEWITHSUNDEEP
python-3.x
Bhushan Patil
Bhushan Patil

Reputation: 11

Boolean "True" is not printing from set in Python

c= {1,3,5,89.07, True, "Night", 1,3}
print(c)

when I run this code, the output I received was, {1, 3, 'Night', 5, 89.07}

but when I replaced the "True" bool with False, the output was, {False,1, 3, 'Night', 5, 89.07}

So, why it is not giving "True" bool in first case ?

Upvotes: 1

Views: 441

Answers (1)

Quelklef
Quelklef

Reputation: 2157

Note that a similar effect is observed for 0:

>>> print({ 1, True })
{1}
>>> print({ 0, False })
{0}

This seems to be because in Python bool is a subclass of int, and often False acts like 0 and True like 1:

>>> isinstance(True, int)
True
>>> False + True
1
>>> False * 100
0
>>> 8 ** False
1

It's even the case that False == 0 and True == 1!

So in your case because 1 is already in your set, adding True to it makes no difference. But if you add False you get a new element.

Upvotes: 1

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