Python 3.0 conditional expression pass reports an error. How to solve it?

The phenomenon and background of the problem

python3.0 Can not be used alone in conditional expressions pass Do you ？

Problem related code , Do not paste screenshots

print('1' if 1>2 else pass)

Operation results and error reporting contents

invalid syntax

My solution ideas and tried methods

stay pass Just add a character before it to run , But why ？