How to Do Case Insensitive String Comparison in Python

Using casefold Method

The str.casefold() method returns a casefolded copy of the string. Casefolded strings may be used for caseless matching. For example,

#!/usr/bin/python3

a = "Hello"
b = "heLLo"

print(a.casefold() == b.casefold())
print(a == b)
print("ß".casefold() == "SS".casefold())

True
False
True

The German lowercase letter 'ß' is equivalent to "ss".

Using lower Method

The following example should cover whatever you are trying to do:

#!/usr/bin/python3

a = "Hello"
b = "heLLo"

print(a.lower() == b.lower())
print(a == b)
print('ß'.lower() == 'SS'.lower())

True
False
False