AttributeError: 'DynamicalSystem' object has no attribute 'num_events'

[al116]

Downgraded Sympy to 1.0, changed 'from fractions import gcd' to 'from math import gcd' within egyptian_fraction.py to get over that error, but then received this error on the pendulum example.

[XxxuLimei]

I've received the same error, it seems that the class "DynamicalSystem" has the fatal error in the attribute.

[FLSP]

I doubt the author have not test his examples since Oct.27.2021. On this day he upgraded this project with note about num_events, and add something about it in block_diagram.py. After that, this problem existed.
I have a try to retrieve to a version before this day, and the examples all worked will. I hope the author can repair it. @sixpearls

[Malipour14]

I still get this error while running the pendulum example or any other example containing DynamicalSystem. I uninstalled the simupy and tried to install it using the development model in github and downgraded Sympy, but still I face the same error.

[eric-silk]

I'm also getting this error. This looks like a very promising library, and I've reverted to the commit just before Oct. 27th (a7f0aec) to play around with it; however, it'd be great if the developer could at least acknowledge the issue to provide some indication it may get fixed.