It looks like that’s just how string works.
Two options:
if all(x.isalpha() or x.isspace() for x in original):
(modified on inspectorG4dget’s recommendation below)
or
original.replace(' ','').isalpha()should work.

It looks like that’s just how string works.
Two options:
if all(x.isalpha() or x.isspace() for x in original):
(modified on inspectorG4dget’s recommendation below)
or
original.replace(' ','').isalpha()should work.