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Python / DataPython

df.duplicated().sum(): Count duplicate rows in a DataFrame

Use df.duplicated().sum() to count duplicate rows in a DataFrame. It improves repeatability and debugging in Python and data workflows.

df.duplicated().sum()

Why it helps

Use df.duplicated().sum() to count duplicate rows in a DataFrame. It improves repeatability and debugging in Python and data workflows.

How to use it

  1. Open the relevant app or terminal.
  2. Use the shortcut or command above in the relevant context.
  3. Check the result; for commands that change data, test on a small example first.
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