CODEWITHSUNDEEP
pythonboolean
yeetthemhatersaway
yeetthemhatersaway

Reputation: 507

How to convert number 1 to a Boolean in python

I have seen similar questions asked, but none have answered my question. I am relatively new to python, and have no idea what i'm doing.

Upvotes: 39

Views: 130570

Answers (5)

Let's L.C.E
Let's L.C.E

Reputation: 41

To convert 1 to boolean type:

print(bool(1))

Which returns True.

Upvotes: 1

U13-Forward
U13-Forward

Reputation: 71570

Use:

>>> bool(1)
True
>>> bool(0)
False
>>> int(bool(1))
1
>>> int(bool(0))
0

Can convert back too.

Or a clever hack that could be quicker would be:

>>> not not 1
True
>>> not not 0
False
>>>

Converting back:

>>> int(not not 1)
1
>>> int(not not 0)
0
>>>

Upvotes: 58

Anurag Pande
Anurag Pande

Reputation: 123

Only the following values will return False when passed as a parameter to bool()

  • None
  • False
  • Zero of any numeric type. For example, 0, 0.0, 0j
  • Empty sequence. For example, (), [], ''.
  • Empty mapping. For example, {}
  • objects of Classes which has bool() or len() method which returns 0 or False

Everything else returns True

Source1 Source2

Upvotes: 9

Geeocode
Geeocode

Reputation: 5797

Unless you don't want to explicitly use Boolean type variable you don't need to. Python accepts it as True in many expression:

print(True == 1)
print(False == 0)

Out:

True
True

In other cases you can use bool(1) of course.

print(bool(1))
print(bool(0))

Out:

True
False

Upvotes: 5

PL200
PL200

Reputation: 741

Very simple:

bool(1)

Here are a few scenarios, to show:

print(bool(1))

Will return: True

print(bool(0))

Will return: False

Upvotes: 3

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