Python 2.7: Issues with maintaining state across multiple calls to a generator function
I've been researching this but I need help solving I'm currently working on a feature in Python 2.7 that involves using a generator function to yield results based on user input. The function is supposed to maintain its state across multiple calls, but it seems to lose it unexpectedly on certain conditions. Here's the simplified version of the code I have: ```python def stateful_generator(): state = 0 while True: yield state state += 1 ``` When I call this generator in a loop like this: ```python gen = stateful_generator() for i in range(3): print gen.next() # Should print 0, 1, 2 ``` It works as expected, printing 0, 1, and 2. However, when I try to use it in a function that gets called multiple times, I end up getting unexpected results: ```python def use_generator(): for i in range(2): print gen.next() # I expect it to continue from where it left off use_generator() use_generator() ``` I thought the state would persist across calls to `use_generator`, but instead, it prints 3 and then 4 the first time, and then 5 and 6 the next, which is not what I intended. It's as if the generator is somehow being reset or the state is being lost. I haven't explicitly reset anything between calls to `use_generator`, and this behavior is confusing. I've tried moving the generator instantiation inside `use_generator`, but that loses state completely. How can I maintain the state of the generator across multiple calls to a function? Is there a better pattern I should be using in this situation? This is happening in both development and production on Ubuntu 22.04. I recently upgraded to Python LTS. Has anyone else encountered this?