currently, some of the programs use static type checking like this program but some of the programs did not use static typing.

it's a good practice to use static typing as it makes code more clear and readable, should we make it a standard for this repository.we can use mypy for

We need to improve the comments explaining the main ideas / insights of the solution

All suggestions are welcome. Let's talk about what you'd like to see be added to TorBot and we can work on incorporating it into v2. This will be used to track your suggestions.

IMO we should keep only __contains__ method

What is the expected enhancement?

>>> from qiskit.aqua.operators import I, X
>>> (0 * X + I) == I
False  # should be True

A possible solution would be to add a ``SummedOp.chop_summands(threshold=0)