SFPS is a small and very efficient Python library which helps calculate the real-time computing frame rate with a few lines of code.
You can install from PyPI:
pip install sfps
You can import and initialize SFPS in your Python code:
from sfps import SFPS
sfps = SFPS(nframes=8, interval=1)
nframes(int,default=5) : Number of the last frames, used for averaging.interval(int,default=1) : Time interval in second.
And then you can call fps() or raw_fps() to calculate the real-time frame rate.
...
fps = sfps.fps(format_spec='.2f')
...
For usage details, please check SFPS. You can also check an example here.