Are identifiers case sensitive in Python

This is in accordance with the ANSI C standard. The linker is case insensitive , it sees everything in lowercase. To the linker, ABC, abc, and Abc refer to the same identifier abc.

Case sensitivity is important because it affects the way the language interprets the symbols used . The uniqueness of ‘a’ versus ‘A’ is supported by the language. In other words, it matches the internal representation.