Usage of double quotes inside an f-string, which causes a syntax error #68

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opened 2025-11-02 00:03:01 -05:00 by GiteaMirror · 0 comments
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Originally created by @zachpinto on GitHub (Jun 8, 2024).

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)")

Originally created by @zachpinto on GitHub (Jun 8, 2024). 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)")`
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Reference: github-starred/Made-With-ML#68