Python Pandas: How do I split a list into columns?  I have a file like this: 1 45.40  38.99  100.33 2 44.89  89.23    23.45 3 49.90  78.82    99.32 I did the read operation: import pandas as pd df = pd.read_csv("myfile.txt")  How do I get it to a column and then add it to a list?  For example:  A = [1,2,3] B= [45.40, 44.89, 49.90] I've tried so many different things and I'm stuck

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Stack operations

A stack is a linear data structure that follows certain order to perform the operation; the order will be LIFO (Last In First Out) data structure. In the stack data structure elements/items are removed and added only from the top. The topmost stack item/element is pointed by the top pointer and the element which is added to the stack first will get deleted at the last.