This is a workload generator designed especifically to perform load testing for several applications. The internal use case of this workload generator is for load testing AWS Lambda functions, but it can be used for other purposes. All you have to do is give it a worker function and the number of requests per second you want to achieve on average and it will do the rest for you.
Pypi: https://pypi.org/project/ddsl-wg/
Check out the example.
Install using pip:
$ pip install ddsl-wgUpgrading:
pip install ddsl-wg --upgrade