Create a generator that yields values from any number of inner generators

Question

I have a generator function generate which yields 5 random numbers one at a time. I need to be able to generate the numbers in two ways:

1. Single g

Answer 1

you should use itertools.chain.from_iterable

return itertools.chain.from_iterable(generate(value) for value in values)

Answer 2

You can specify generator delegation using yield from starting with python-3.3+.

def get_resource(values=None):
    def resource_generator():
        if values:
            for value in values:
                yield from generate(value)
        else:
            yield from generate(None)

    return resource_generator()

Now,

>>> list(get_resource([1, 2, 3]))
[46, 99, 97, 1, 42, 79, 69, 9, 45, 25, 77, 56, 54, 7, 41]