For any machine learning or data mining purpose, the first job is to pre-process the data so that we can us the data for the original purpose. In lots of cases we have the raw data in *csv format, which we need to import and preprocess using the language we are using for the particular job. Python is one of the most popular language for this purpose. For this article I will use Python and one very popular library named pandas to show how we can use pandas for read, import and preprocess a *.csv file.
We have a *csv file which we want to pre-process. This is a file with a large number of columns, so it is not a good idea to display it here. I am showing a part of it.
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