<!-- Please describe the issue in detail here, and fill in the fields below --> ### Reproducing code example: <!-- A short code example that reproduces the problem/missing feature. It should be self-contained, i.e., possible to run as-is via 'python myproblem.py' --> ```python import pysindy << your code here >> ``` ### Error message: <!-- Full error message, if any (starting from line Traceback: ...) --> ### PySINDy/Python version information: <!-- Output from 'import sys, pysindy; print(pysindy.__version__, sys.version)' -->