question mark operator python

value = b if a > 10 else c

Here is what the above code is Doing:
1. It’s checking if a is greater than 10.
2. If it is, it’s setting the value of b to the value of b.
3. If it’s not, it’s setting the value of c to the value of c.

The reason this works is because Python is evaluating the expressions from left to right. So, it first checks if a is greater than 10. If it is, it sets the value of b to the value of b. If it’s not, it sets the value of c to the value of c.

This is an important concept to understand, because it can be used to write concise and readable code. For example, consider the following code:

a = 10
b = 20

if a > 10:
b = a
else:
a = b

This code can be rewritten using the ternary operator as follows:

a = 10
b = 20

a = b if a > 10 else a

As you can see, this code is much more concise and readable.