Casefold в Python
s1 = 'ß'
s2 = 'ss'
s3 = 'SS'
if s1.casefold() == s2.casefold():
print('Casefolded strings of s1 and s2 are equal')
else:
print('Casefolded strings of s1 and s2 are not equal')
if s1.casefold() == s3.casefold():
print('Casefolded strings of s1 and s3 are equal')
Mighty Unicorn