# Introduction **Objectives:** - Learn about delegating generators **Files Modified:** `cofollow.py`, `server.py` One potential issue in code that relies on generators is the problem of hiding details from the user and writing libraries. A lot of low-level mechanics are generally required to drive everything and it's often rather awkward to directly expose it to users. Starting in Python 3.3, a new `yield from` statement can be used to delegate generators to another function. It is a useful way to clean-up code that relies on generators.
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