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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get(self, variable_path: str, default: t.Optional[t.Any] = None, coerce_type: t.Optional[t.Type] = None, coercer: t.Optional[t.Callable] = None, **kwargs):
 """ Reads a value of ``variable_path`` from environment. If ``coerce_type`` is ``bool`` and no ``coercer`` specified, ``coerces`` forced to be :func:`~django_docker_helpers.utils.coerce_str_to_bool` :param variable_path: a delimiter-separated path to a nested value :param default: default value if there's no object by specified path :param coerce_type: cast a type of a value to a specified one :param coercer: perform a type casting with specified callback :param kwargs: additional arguments inherited parser may need :return: value or default """


        var_name = self.get_env_var_name(variable_path)
        val = self.env.get(var_name, self.sentinel)
        if val is self.sentinel:
            return default

        # coerce to bool with default env coercer if no coercer specified
        if coerce_type and coerce_type is bool and not coercer:
            coercer = coerce_str_to_bool

        return self.coerce(val, coerce_type=coerce_type, coercer=coercer)