One line if-condition-assignment

Question

I have the following code

num1 = 10
someBoolValue = True

I need to set the value of num1 to 20 if someBoolV

Answer 1

Here is what i can suggest. Use another variable to derive the if clause and assign it to num1.

Code:

num2 =20 if someBoolValue else num1
num1=num2

Answer 2

You can do it this way.

try:
    a = [i for i in [20] if False][0]
except IndexError:
    print("Do what ever you want here")

You can solve your problem this way but, using 'try/except block' is not the best practice for python.