it's not an empty string.
if len is ("original") > 0: and if len is("original")< 0: .isalpha()
remember we are in programming language.so we dont need to tell like this(
if len is).also it's not the right syntax to check the length of a variable and whether it's alphabetical characters or not.
you can do
if condition and second_condition:
to see the length of a variable do the following
isalpha()checks whether the string consists of alphabetic characters only.
Following is the syntax for islpha() method −