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Q.5 How to swap two columns in a 2d numpy array? (Swap columns 1 and 2 in the array arr). ... PYTHON PANDAS) Q.1 Name some common data structures of python’s pandas library. Q.2 Given a list L=[3,4,5] and an ndarray N having elements 3,4,5. ... A line chart from the 1990 and 2000 columns of dataframe df1. Create a bar chart plotting the three ... ................
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