it will be possible

Question

python is not possible to differentiate between which letter is larger than the other by the alphabet as
py = a

if py == <b:
                 print ("hi")
else:
       print ("not")

Answer 1

It is possible to compare letters.

Python assumes that a and b are variables.
Because you haven't declared variables a and b, Python raises an error.

To compare letters you need to use quotes to create strings. Strings are objects that are specialized for handling text.

You can run:

py = "a"

if py == "b":
print("hi")

else:
print("not")

And this would print "not".