is there if def in python code example

Example: if syntax in python

variable_name = input("y/n? >> ")
if variable_name == "y":
	print("That's good! :) ")
# note the double equal signs. only a single equal sign will receive a Syntax error blah blah blah message.
elif variable_name == "n":
    print("That's bad! :( ")
else:
    print("You blow up for not following my instructions. Detention forever and get lost!")