Is an empty string true or false in python 3

Question

This is the code I have made to check it but I don't get it still...
https://code.sololearn.com/cAV8IGGRwinU/?ref=app

When I check that ''==False it returns false.

But if I use bool('') it returns False....

Answer 1

7.0 and 7 have different types too, yet they're equal. The point is that '' and False have the same boolean values, but that doesn't make them equal. None, [], set() etc. are all False. If we were to say that '' == False were True, we'd consequently have to say that 0 == '', [] == None etc. are also True because if a=b and b=c, then a=c (btw, 5 and 7 also have the same boolean values but that doesn't mean that 5 == 7 should be True)

Answer 2

Saksham Jain Both ''==False and '' ==True are False because an empty string is not a boolean expression. It has a boolean value which can be found out with bool(''). But an empty string is not equivalent to False. If it were the same, an expression like if 5-5=='' would evaluate to True. 5-5 is 0, 0 is False. '' is False. False == False is True.

This expression would also be True: 'hello' == 'goodbye' (True == True is True). Using boolean logic this way obviously leads to unwanted results

Answer 3

Anna I still not got why

''==False is False
And also ''==True is False

But bool('')==False is True.

Answer 4

Aymane Boukrouh that I can see from my code but why doesn't ""==False give True?

Answer 5

Aymane Boukrouh I wanted ask why doesn't the second if block executed in my code

Answer 6

Saksham Jain I think an empty string is neither false nor true. If you try:
if(not None):
print('test')
Then you get test.
So probably not None ans not empty_string returns True

Answer 7

Try if bool("") == False

Answer 8

It's like comparing apples with pears, the conditions: "==False or "==None or "==[] or "=={}, will never be True because are different types

Answer 9

False

Answer 10

Try:
a = ''
If(not a):
print("test")
OUTPUT: test

Answer 11

I don't know to be honest, I'll look for it and answer you.

Answer 12

you are using if function, if the result of if function is some value the it will say "True" , otherwise if it return zero or blank, it will return boolean "False"