Question: Read the hacker_news.csv file from data directory into a dataframe. Get the row and column rank (count) of this dataframe. Get the first eight rows.

Read the "hacker_news.csv" file from data directory into a dataframe.

Get the row and column rank (count) of this dataframe.

Get the first eight rows.

Get the count of unique values along "author" column.

Get the mean value of the "num_comments" column.

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