I'd like to implement a subclass of string that works like this:
>>>m = MyString('mail')
>>>m == 'fail'
True
>>>m == 'mail'
False
>>>m in ['fail', hail']
True
My best attempt for something like this is:
class MyString(str):
def __init__(self, seq):
if self == self.clean(seq): pass
else: self = MyString(self.clean(seq))
def clean(self, seq):
seq = seq.replace("m", "f")
but this doesn't work. Nothing gets changed.
I understand that I could just remove the clean function from the
class and call it every time, but I use this class in several
locations, and I think it would be much safer to have it do the
cleaning itself.
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