Re: [Python-ideas] Accepting "?" as a valid character for identifiers

An other interesting postfix in the same line is "!" (for mutating methods).

bytearray is a mutable type but it's methods are designed for immutable bytes. I think bytearray should provide in-place mutation method. And '!' is good for the method. For example, bytearray.strip!() should be in-place. -- INADA Naoki