Python implements the question mark expression of？ The method of

And and or in python are very different from other languages
And and or in other languages are results that return a bool type; python is not. It returns one of the values that do the and and or operation.
That value determines the value of this expression, and that value is returned.

>> 5 and ''

The result here is "", an empty string, because that's what caused this expression to be false.
That is, in and, it is only possible to be a result if the previous value is false. Otherwise, the final value is the result.

Now that you understand how and and or work, you can implement it. Right? The expression:

if (expression):
     return truevalue
else:
    return falsevalue

The equivalent of this is (similarly? ):

expression and truevalue or falsevalue
# or 
(expression and (truevalue,) or (falsevalue,))[0] # Thank you for snake117 Advice provided 
# This is to avoid truevalue It is possible that false , such as an empty string