Pandas اسئلة واجوبة المقابلات

سؤال 16. How to handle duplicate values in a DataFrame?

You can use drop_duplicates() to remove duplicate rows: df.drop_duplicates()

سؤال 17. Explain the purpose of the iterrows() function in Pandas.

iterrows() is used to iterate over DataFrame rows as (index, Series) pairs.

Example:

for index, row in df.iterrows(): print(index, row['Column'])

سؤال 18. How to rename columns in a DataFrame?

You can use the rename() method to rename columns: df.rename(columns={'OldName': 'NewName'})

سؤال 19. Explain the concept of MultiIndex in Pandas.

MultiIndex allows you to have multiple index levels on an axis.

سؤال 20. How to handle time series data in Pandas?

Pandas provides the Timestamp type and functions like resample() for time series analysis.

Example:

df['Date'] = pd.to_datetime(df['Date'])