How can I print the Truth value of a variable?

Question

In Python, variables have truthy values based on their content. For example:

>>> def a(x):

...     if x:

...         print (True)

... 

>>> a('')

>>> a(0)

>>> a('a')

True

>>> 

>>> a([])

>>> a([1])

True

>>> a([None])

True

>>> a([0])

True

I also know I can print the truthy value of a comparison without the if operator at all:

>>> print (1==1)

True

>>> print (1<5)

True

>>> print (5<1)

False

But how can I print the

True

/

False

value of a variable? Currently, I'm doing this:

print (not not a)

but that looks a little inelegant. Is there a preferred way?

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Answer 1

Use the builtin bool type.

print(bool(a))

Some examples from the REPL:

>>> print(bool(''))
False
>>> print(bool('a'))
True
>>> print(bool([]))
False

How can I print the Truth value of a variable?

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