How can I run the initialization code for a generator function immediately, rather than at the first call?

Question

I have a generator function that goes something like this:

def mygenerator():
    next_value = compute_first_value() # Costly operation
    while next_value          


        

Answer 1

I needed something similar. This is what I landed on. Push the generator function into an inner and return it's call.

def mygenerator():
    next_value = compute_first_value()

    def generator():
        while next_value != terminating_value:
            yield next_value
            next_value = compute_next(next_value)

    return generator()