The python program is an illustration of conditional expressions or conditionals statements, and they are used to make decisions
The conditional expression written in Python, where comments are used to explain each action is as follows:
#This tests if user_val is less than 0
if user_val < 0:
#This prints "negative" if true
print("negative")
else:
#This prints "non_negative" if true
print("non_negative")
Read more about conditional statements at:
https://brainly.com/question/24833629