why is the answer true ?

Question

Hello :)
i have been playing around with this question:
if (1==1) and (2+2>3):
print("true")
else:
print("false)
i altered the Second Expression to (1+1>3) , and the it returns 'false' , so far so good.
However once i use a parenthesis like this: (1+(1>3)) it returns 'true'.
i really can't figure out How this Works. any help is much appreciated, thx

Answer 1

I guess you can understand what happened at the first 2 cases so I'm not going to explain them

in python

boolean values as integers->
True is equal to 1
False is equal to 0

integers as booleans->
0 is equal to False
any other value is equal to True

so...
bool(2)=True
int(True)=1

(1+(1>3)) -------> A
1>3 = False
so A is equal to (1 + False)
python converts False to integer to add the values
so A = (1+0) ;because False=0
A=1
you have used this in a place where you have to put a condition.
Because 1 is True as a boolean value, the second part is also True
True and True = True

Answer 2

in any kind of variable or value
if it is empty it is False as a boolean
if it is not empty then it is True
eg:
"hello"=True
""=False
[ ]= False
["d",5]=True
5=True
0=False

here = means the value as a boolean ,not that "hello" and True are the same
To get the boolean value of anything use bool(value)

how ever this is not the same in the other way
eg:list(False) is not [ ] , it is [False]
booleans are specially represented as numbers using 0,1

so as you asked
float(True)=1.0
float(False)=0.0
bool(0.0)=False
bool(1.0)=True
bool(6437.6789)=True. any non zero value in float is also True

sorry my English is not good

Answer 3

thank you very much Sunera! sorry to Keep asking but dies this also apply to floats ?

Answer 4

Let's break this down:
(1+(1>3))
(1+False)
(1+0)

With the parentheses as you arranged them, 1>3 is a comparison, not an arithmetic operation, so the result is the boolean False. Now the term for the AND logic is no longer a condition, just an integer, which is why the result is True.

P.S. Don't forget your second " in line 4! ;-)

Answer 5

Try it with floats ;-)

Lets shorten this: yes, it works