The "ModuleNotFoundError: No module named 'gevent'" error occurs when Python is unable to locate the 'gevent' package in your system. gevent is a popular library for concurrent programming that uses greenlet-based coroutines and a stackless coroutine model. To resolve this issue, you need to install the gevent package using pip, which is the package installer for Python: 1. For Python 3: ```shell pip3 install gevent ``` or if you're working with virtual environments (recommended), activate your environment first and then run: ```shell python -m pip install gevent ``` 2. For Python 2 (if you are still using it): ```shell pip install gevent ``` If you encounter permission issues, you might need to use `pip` with `sudo` (Unix/Linux/MacOS) or run the command prompt as an administrator (Windows): ```shell sudo pip3 install gevent ``` After installation, try running your script again, and Python should be able to find and import the 'gevent' module. [2024-02-29 14:05:49 | AI写代码神器 | 237点数解答]