Python Pandas perguntas e respostas de entrevista
Pergunta 16. Explain the difference between Series and DataFrame in Pandas.
A Series is a one-dimensional labeled array, and a DataFrame is a two-dimensional table.
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Pergunta 17. How do you convert a Pandas DataFrame to a NumPy array?
Use the values attribute. df.values
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Pergunta 18. What is the purpose of the nunique function in Pandas?
nunique returns the number of unique elements in a Series or DataFrame.
Example:
df['column'].nunique()
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Pergunta 19. How can you reset the index of a Pandas DataFrame?
Use the reset_index function. df.reset_index()
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Pergunta 20. Explain the concept of MultiIndex in Pandas.
MultiIndex is used to represent hierarchical index levels in a DataFrame.
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Mais uteis segundo os usuarios:
- What is Pandas in Python?
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- How do you import the Pandas library?
- How can you apply a function to each element in a DataFrame?
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