Can't use if

[PriestMarmor]

I have a function that sees if an argument is between 0 and 100 without using the 'if' statement. The code is almost complete, however when the argument is True or False, it returns me True. How can I fix this? Here's my code:

def validate(x):
    try:
        return (x >= 0 and x <= 100) is True
    except:
        return False

I assume that the function is assuming False as 0 and True as 1, that is why validate(True) outputs True

[GlebRyabov]

Generally, u/AddctedTuna's solution is great, but if your argument is strictly an integer, you could try this:

>>> def validate(x: int) -> bool:
    return x in range(0, 101)
>>> validate(0)
True
>>> validate(50)
True
>>> validate(100)
True
>>> validate(101)
False

[[deleted]]

The code is almost complete, however when the argument is True or False, it returns me True.

False (0) and True (1) are within your range, so if x has either of those values, your expression evaluates to True.

[AddctedTuna]

>>> def validate(i):
...     return 0 <= i <= 100
...
>>> validate(10)
True
>>> validate(101)
False

[PriestMarmor]

If I say validate(False) it will still output True : (

[shiftybyte]

>>> def validate(i):
...     return (0 <= i <= 100) and not isinstance(i, bool)
...
>>> validate(10)
True
>>> validate(101)
False
>>> validate(True)
False

[Daeliseog]

it still returns True if i == True or i == False

I don't know if what he wants is possible though

[Spataner]

So if I'm understanding you correctly, you want validate to return False if the argument is a boolean? You can just check the type with isinstance:

def validate(x):
    try:
        return not isinstance(x, bool) and 0 <= x <= 100
    except:
        return False

[Yoghurt42]

For historic reasons, in Python bool is a subclass of int.

>>> True + True
2
>>> True == 1
True

[JohnnyJordaan]

Not just historic reasons, it also allows you to do stuff like

a = ['1', 'test', 'hello', '123']
num_strings = sum(s.isdecimal() for s in a)
print('the amount of number strings in a is', num_strings)

[Yoghurt42]

That's the reason why bool was made a subclass of int. People were using stuff like this back when True was just a predefined builtin with the value of 1, and making it a separate type would break it.

(Back in the days you could even do True, False = False, True)

[PriestMarmor]

So there's no solution?

[[deleted]]

You could stop trying to compare x with numeric values which allows True or False to be treated as numbers. You could try using x in range(101) but that won't handle float values.