I hit on this attempting to determine why you'd use method 'w+' vs . 'w'. Ultimately, I just did some screening. I do not see much function for manner 'w+', as in each scenarios, the file is truncated to start with. However, Along with the 'w+', you can read through http://ttps://lostvapesstore.com/product/lost-vape-thelema-quest-200w-kit/