Maybe monad in python

Maybe.py

from operator import neg
class Maybe(object):
    def __init__(self, v, failed=False):
        self.v = v
        self.failed = failed

    def bind(self, f):
        if self.failed:
            return self
        try:
            return Maybe(f(self.v))
        except:
            return Maybe(None, True)
    def __str__(self):
        return (f'{self.v} {self.failed}')

    def __le__(self, f):
        return self.bind(f)
    def __or__(self, f):
        return self.bind(f)


# Example
print(Maybe('123') | int | neg | str)
# Note: This doesn't work. It only works for or because the left is evaluated first
print(Maybe('123')<=int<=neg<=str)
print(Maybe('abc')<=int<=neg<=str)