![3. How would you add a new column namely 'val' to a dataframe df that has 10 rows in it and has columns as 'Item', 'Qty', 'Price' ? You can choose to 3. How would you add a new column namely 'val' to a dataframe df that has 10 rows in it and has columns as 'Item', 'Qty', 'Price' ? You can choose to](https://pbclasses.b-cdn.net/wp-content/uploads/2019/06/Pasted-into-3.-How-would-you-add-a-new-column-namely-val-to-a-dataframe-df-that-has-10-rows-in-it-and-has-columns-as-Item-Qty-Price-You-can-choose-to-put-any-values-of-you-choice..png)
3. How would you add a new column namely 'val' to a dataframe df that has 10 rows in it and has columns as 'Item', 'Qty', 'Price' ? You can choose to
How to add or subtract two columns and put the results in a new column in a Pandas Dataframe - Quora
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