Pandas: vectorized vs apply vs iterrows

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Task

📝 **Question:** Compute c=a+b for 10M rows. Fastest in pandas?

📋 Pick the right answer.

💡 **Hint:** Re-read the theory above if unsure.

Polars / DuckDB for big DataFrames

Loading a CSV

Selecting columns and rows

Prerequisites — what you should know before this track

Prerequisites — what you should know before this track

🎯 Quiz

Question

📝 **Question:** Compute c=a+b for 10M rows. Fastest in pandas?

📋 Pick the right answer.

💡 **Hint:** Re-read the theory above if unsure.

💬 Discussion