Python

Python - lower() vs. casefold() for string matching and converting to lowercase

Python tip:

Use .casfolde() instead of .lower() when you want to perform caseless operations when working with Unicode strings (for ASCII only strings they work the same) -- e.g., check if two strings are equal.

# In German ß == ss
print("straße".lower() == "strasse")
# False
print("straße".casefold() == "strasse")
# True