Given sample data in text format, how would you read it into Python, check for null and unique values, and create a new column by multiplying two existing features?

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Read sample data in text, check for null and unique values, create new column by multiplying two features

Save text data as CSV and read in Python using pandas
Use isnull() to check for null values
Use nunique() to check for unique values
Create a new column by multiplying two existing columns
Add the new column to the existing dataframe