[BUG]

[jogisuda]

Hi! I was trying to get started with PySindy in Colab, running the following simple tutorial code:

import numpy as np
import pysindy as ps

t = np.linspace(0, 1, 100)
x = 3 * np.exp(-2 * t)
y = 0.5 * np.exp(t)
X = np.stack((x, y), axis=-1)  # First column is x, second is y
model = ps.SINDy(feature_names=["x", "y"])
model.fit(X, t=t)

However, I get the following Error message:

AttributeError Traceback (most recent call last)
in ()
1 model = ps.SINDy(feature_names=["x", "y"])
----> 2 model.fit(X, t=t)

6 frames
/usr/local/lib/python3.7/dist-packages/pysindy/feature_library/polynomial_library.py in fit(self, x, y)
170 )
171 print(n_features)
--> 172 self.n_input_features_ = n_features
173 self.n_output_features_ = sum(1 for _ in combinations)
174 return self

AttributeError: can't set attribute

PySINDy/Python version information:

1.4.3 3.7.12 (default, Sep 10 2021, 00:21:48)
[GCC 7.5.0]

[akaptano]

Hi Jogisuda,

Thanks for your interest in using PySINDy! This issue has been reported elsewhere in Issues #124 #125 #129 and it stems from a small incompatibility between PySINDy and the new scikit-learn version 1.0. We have patched this issue on the development branch and will update the main branch in a few weeks. For now, you can see the other Issues for straightforwardly downgrading your scikit-learn version.

Best,
Alan

[jogisuda]

Thank you!

[mathematicsofpaul]

Still experiencing this (just for other users to know).

[MattKingShoal]

Still experiencing this now too

[akaptano]

@znicolaou and @Jacob-Stevens-Haas did we not patch this in the latest release?

[Jacob-Stevens-Haas]

I thought it was patched before I came into the picture - I haven't worked on it.

Maybe it's because I made the last release a 2.0.0-rc, so pip defaults to the last stable version.

I made a 1.x branch before merging my big PR, so that should have the relevant change. I can do a release from that branch and that should update the "stable" version pip sees.

edit: Done, v1.7.1 should be on pypi now once the GH "release" workflow completes. Verified code executes without error in fresh environment with v1.7.1 downloaded from PyPI.

[znicolaou]

Thanks for taking a look, @akaptano & @Jacob-Stevens-Haas! I'm out of town till next week. I can take a look at some things again soon after I get back.

[RiabovAndrew]

Hi!
Can be reproduced on 1.7.5 version. 1.7.3 is OK.