Usage of double quotes inside an f-string, which causes a syntax error

[zachpinto]

In the section 'Machine Learning' in the 'Foundations' course, there is a code block in the 'Inference' sub-section:

# Unstandardize predictions pred_infer = model(X_infer).detach().numpy() * np.sqrt(y_scaler.var_) + y_scaler.mean_ for i, index in enumerate(sample_indices): print (f"{df.iloc[index]["y"]:.2f} (actual) → {pred_infer[i][0]:.2f} (predicted)")

However since there are also double-quotes around the y in the indexing (intended to display as "y"), the f-string ends early.

A fix would include simply changing the double quotes around the "y" to single quotes 'y':

# Unstandardize predictions pred_infer = model(X_infer).detach().numpy() * np.sqrt(y_scaler.var_) + y_scaler.mean_ for i, index in enumerate(sample_indices): print (f"{df.iloc[index]['y']:.2f} (actual) → {pred_infer[i][0]:.2f} (predicted)")