What does this mean: X@model_w

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
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In optional lab: C1_W2_Lab04_FeatEng_PolyReg_Soln, in this line :
plt.plot(x,X@model_w + model_b, label=“Predicted Value”); plt.xlabel(“X”); plt.ylabel(“y”); plt.legend(); plt.show(), what does X@model_w means?

Thanks.

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Here’s an answer I found on the internet via a search:

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So matrix multiplication then… (I’d only seen @ used before as a decorator)
This table is also a helpful reference.